Close enough, bring in the 22LR miniguns with birdshot. Let the SJWs feel the pain. (No, GE Miniguns are a little more powerful than what was required in this situation.)
Those Flash-bangs weren't getting it. Puff the Magic Dragon might've been OK but the heroes in blue on their bikes might've wanted to back off a klic or so.
Sometime in the late 80s or early 90s I met this old, retired FW cop named Harold...
When his gig was up with the Army Air Corps as a ferry pilot running bombers to Europe, he became a cop for the FWPD in '46 and retired in'66 because "It was just too political with the civil rights movement." Had he gone another five years, he would've gotten twice his pension rather than a half.
What kind of fearful force would make a man to do something so stupid?