"How many blm people were murdered at point blank range by the police during those riots?"

I think you're confused.  The BLM protests were in response to the thousands of black people killed by law enforcement, white citizen mobs, and/or hate groups throughout the past two centuries.

Also, dozens of BLM protesters were arrested.  Hell, journalists were arrested while simply trying to observe.  Did you watch any actual news reports in addition to reading the racist, right-wing newsletters you apparently get your information from?