The topic is "Marines being mobilized in response to LA protests." The protests are about ICE rounding up people on suspicion of being undocumented immigrants.

The topic is "Marines being mobilized in response to LA protests." The protests are about ICE rounding up people on suspicion of being undocumented immigrants. Whether a place being full of undocumented immigrants is actually a bad thing is extremely salient to the topic, especially when the President has decided it's worth pointing the military's guns at our own citzenry over.