I mean, the sitting president urged his followers to storm the capitol in order to reverse an election result. That's pretty much the most clearcut possible grounds for impeachment that exists.
You're leaving out that politicians who have encouraged people to attend BLM protests often encourage people to assembly peacefully but to make their voices heard. I haven't seen anywhere prior to the attack on the Capitol building where Trump urged his followers to be peaceful. He has done the opposite, which allowed his followers to infer that he would support acts of violence.