Interesting tactic that the state police used against a radical organization back in the 80's. If there would be no collateral damage, this could be justified against terrorist groups operating today, such as Antifa, Muslim Brotherhood, anyone connected to ISIS, etc.:

"May 13, 1985 is a day that changed Philadelphia forever.

On that day, police dropped a bomb on the MOVE compound on Osage Avenue in West Philadelphia near Cobbs Creek, leaving 11 people, including children, dead. The ensuing fire destroyed the neighborhood and left decades of scars for everyone involved.

The armed confrontation between Philadelphia authorities and the radical group MOVE has boiled for years. The day before it escalated and by Monday morning the shooting had begun and ended as a bomb was dropped from a state police helicopter onto the group's row house at 5:27 p.m., igniting a fire that destroyed about 60 neighboring homes."

nbcphiladelphia.com/news/local/MOVE-Bombing-Anniversary-509838961.html