I was not aware the MacArthur was gentle. I think there WAS blood in the streets. I decided to Google. There are a lot of articles. Reports ranged from 2 or 3 killed to 1600 killed mostly women and children. Here are two illustrating the range. By all means Google some more.
http://www.dailypaul.com/97314/federal-troops-attack-veterans-marching-in-dc
http://www.npr.org/2011/11/11/142224795/the-bonus-army-how-a-protest-led-to-the-gi-bill