There are individuals in each racial group who are, on the basis of their emotional make-up, compatible with one or more other racial groups. However genuine social assimilation of racial groups as groups is highly unlikely. And, due to the unique responses that whites evoke, assimilation between whites and others, as groups, is impossible.
The focus of this discussion will be upon the social assimilation of non-whites/Jews and whites. America of the mid-twentieth century (specifically, 1945 to 1960) will be presented as a test case to show that non-whites/Jews and whites cannot, as groups, adjust to one another.
During the period in America focused upon here, non-whites and Jews constituted about 10% of the American population. The society they lived in was a very prosperous, stable, and orderly white society. In this position, the non-whites and Jews in America at that time enjoyed, to a relatively high degree, all the marked advantages that white talent, creativity, aesthetics, and sense of fair-play can provide.
To illustrate this, consider material wealth. The non-whites of this group were not, on a per-capita basis, as prosperous as were whites. However, relative to those in contemporaneous non-white societies, and relative to others generally in historical terms, they were quite well off. The Jews in America, however, were, on a per-capita basis, perhaps the materially wealthiest of any other group in America, and indeed, the wealthiest of any other group in the world, ever - past or present - a wealth that they had gained due to the advantages, opportunities, and freedoms that were available to them in the America of that time and in previous decades.
To further illustrate the situation, there were educational, vocational, and commercial opportunities - things of which the Jews, in particular, availed themselves as did many non-whites, particularly Asians. And, as noted, there prevailed social stability and peacefulness.
Now it is true that, to a large degree, the whites of America during the period in question rejected the non-whites, and to a certain degree the Jews, who were present there. However, these whites generally did not view these non-whites and Jews (or non-whites and Jews in general - that is, worldwide) as threatening their society or their race. It is true that the proportion of non-whites relative to whites in America was increasing somewhat, but not to a very great extent. Also, non-white immigration was negligible. It is also true that Jews had a very pronounced presence in the media and that Jewish activities by way of this institution had greatly affected American society for decades, but this activity did not affect most American whites negatively and was not of particular notice by most of these whites. So, the non-whites and Jews in America at that time were not representative to whites of a larger threat. For this reason, because most whites did not view the non-whites and Jews in America at the time as posing a threat, whites were gradually becoming, of their own accord, more accepting of these particular non-whites and Jews, though not necessarily of non-whites and Jews generally. It is also likely that, throughout this period, a portion of these non-whites and Jews were feeling more positive toward whites.
As well, material prosperity was increasing for everyone. The social stability spoken of earlier continued. The non-whites and Jews in question were a 10% minority, ensconced in a prosperous, law-abiding, generally fair-minded white society, and were, to a relatively high degree, and to an increasing degree, privy to the advantages of this society. A social observer could have predicted a future American society in which the prospects for the 10% who were non-white or Jewish looked quite bright.
But, in the early 1960's, things changed. It is beyond the scope of this work to recount American social history during the latter part of the twentieth century and into the twenty-first century. Suffice it to say that there was a virtual explosion of hostility toward white America, with the venting of this hostility continuing to the present day. But in the late 1950's, and on the condition that the racial proportions of the American population were to remain the same as these then were, the situation would have seemed an ideal one with respect to bringing about a real compatibility between American whites and those non-whites and Jews who were in America at that time and their descendants. The fact that non-whites/Jews and whites failed to truly adjust to one another, even given the very advantageous circumstances in America during the mid-twentieth century, constitutes strong evidence in support of the statement that was previously made - that a genuine social assimilation of non-whites/Jews and whites, as groups, is impossible.
As an addendum to the points made above regarding the racial situation in America in the mid-twentieth century, occurrences from 1960 to the present might be briefly considered. During this time, the degree to which one racial group (in this case, American whites) has tried to accommodate other racial groups (and this while being the target of, and in spite of, marked hostility being visited upon them by these other racial groups) has been historically unprecedented. This willingness and effort of American whites to accommodate other races was a key factor in bringing about an increase in the proportion of non-whites in America from 10% to over 30% during this period (due almost entirely to leneint immigration policy for non-whties). The attempt of American whites to accommodate others has continued for these several decades, and continues. Yet, this has not led to group compatibility between whites and the other racial groups in America. This further demonstrates that true social assimilation between non-whites/Jews and whites, as groups, cannot be achieved.