The full quote from Destiny—a liberal anti-racist, mind you—is:
The rioting needs to fucking stop. If that means white redneck militia dudes mowing down dipshit protesters that think they can torch buildings at 10 PM, at this point they have my fucking blessing. Holy shit, this shit needs to stop. It needed to stop a long time ago.
To the rest of us, he is expressing exacerbation that law enforcement is allowing chaos from one particular political faction.
If you do believe in good faith that Destiny is actually "suggesting that we unilaterally kill innocent people", then do you believe that bluechecks on Twitter who freely speak in similar terms about White people are actually advocating for the slaughter/genocide of Whites?