You can doubt it, but your doubt means little. You might try looking the statistics at the end of the Bush Administration and again at the end of the Obama Administration.
So you have nothing about the KKK, Proud Boys and Oath Keepers, so you deflect.
Every FBI agent does not make claims that the white supremacy is a big problem, that would be the elitists running the department.
Of course people like you can make up whatever they like about what they believe people like me think, but I don't consider Democrats leftists, many are liberals and some are conservatives, but the party has been taken over by the left.