My apologies for the Twitter link. Appears to have happened around 1:30 EDT, judging from the timestamp in the video. Seems unsurprising that Amerikkkan infrastructure is in this dire of a state (at the cost of innocent people's lives, as usual), but I'd still love to know what the hell happened here. Hopefully the early hour meant that more people weren't harmed.
Photo of the aftermath:
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There are a lot of good people in Baltimore. AFAIK relatively high number of leftists. Remember they all marched in the wake of Freddie Gray’s murder.