The Conspiracy is Capitalism!
Capitalism creates inequality, injustice and unfairness. Not what they say, that it creates economic equality - it is the opposite. A few very wealthy and lot of people who's real wages have not risen since the 1970. So naturally there is going to be racism and anger at the system.
It is blacks, women, minorities, natives etc who are disproportionately effected by the inequality.
Immigration is all about keeping wages low for the wealthy employers.