The whole Intersectionality fad on the Left, is an attempt to divide America into mutually-hostile tribes.
Yep.
i.e. this is projection.
The three debate tools of the left:
1. Ad hominem attack
2. Deflection
3. Projection
Another example: Whenever the left accuses you of racism regarding an action that does not involve race, they are projecting. By inserting race into the discussion they are outing themselves as the racist.
Deflection (changing the subject) can also be done via moving the goalposts. They do that a lot.
Ad-hominem is not just name calling. When they argue against a source with invalid arguments, but ignore the words of the source (they do it all the time with Tony Heller videos), they are exercising the ad-hominem attack.