Racial replacement is not a theory, it is a FACT. Here's 2 examples >>
1. In 1973, the James A Haley VA Hospital in Tampa, with thousands of employees, was 90% white. Employee racial % is now about 95% NON-white. Anybody doubting that is free to stroll through the miles of corridors, and see for yourself.
2. Regarding Joe Biden) trying to replace Americans, with obedient people from the Third World, there is absolutely no question about it. Since he took office, Biden has caused one catastrophe after another. His rating has dropped like a lead ball.
Biden knows that he cannot depend on the American people (who generally hate his guts) to vote for him. Consequently, power-mad Biden has thrown open the Mexican border, and has allowed millions of third world migrants into the US, whom he knows are dependent on him, for them to be able to remain in the US. Biden stocking up replacing American votes with foreigner votes. Not rocket science.