You are assuming that some entity is engaged in the “intentional destruction of the white majority and culture.” You then use that false narrative to create the illusion that the white majority and white culture are in peril from that entity. You thereby succeed in generating opposition to that entity, while establishing a sense of credibility for the false assumption.
Minorities and immigrants do and historically have voted democrat,so the democrats are intentionally working to destroy the white majority and are succeeding. They have made large scale immigration, legal and illegal a priority. They have blocked attempts to limit abortion and do facilitate it and about 70 million American children, mostly from the white majority, have been killed. The result, Clinton approvingly said, is that their will soon be no white majority and it will be a good thing, he told a group of muslim leaders. Obama said that he wants America to be a hodgepodge, and has relentlessly and illegally maximized immigration.
Before the 1960s legal immigration was limited by a quota system which prioritized northern Europeans who could be expected to assimilate persuant to the then national consensus of a melting pot. Then the democrat Congress, lead by Ted Kennedy and a Jewish senator, amended the law to eliminate the quota system, and has promoted an ideology, not of assimilation but of diversity, assimilation, identity politics. A later law grants a priority to ethnic groups have the least population in the US.
It is a policy intended to destroy the white majority and create a nation with no majority and with the democrats as the only party having a chance. As this election demonstrated, a Republican now has no chance of a population majority and Obamss policy of moving immigrants in large number to red states will soon destroy any Non democrat chance in the electoral college as well.