I can share my personal experience on this. We have had both BLM and Trump rallies here in my town over the last several weeks. A local Trump supporter showed up at a BLM rally a few weeks ago and politely asked them a few questions. They got in his face, screamed at him, and publicly falsely accused him on social media of attempting to "attack" some black children who were there. They also called the police, which made for sweet irony as they held their ACAB and "Defund the Police" signs. There was video taken of the interaction.

Last weekend we had a Trump rally here. Towards the end of the rally, a BLM supporter rolled up in her mobility scooter with BLM and pride flags flying and parked right in front of our Trump rally. No one did anything to her.