So brutally assaulting anti-genocide protestors is ok with Mardi Gras, but calling out those who support genocide is a step too far.

Is there any evidence that Dayenu has actually said anything supporting the genocide? Their public web presence does not seem to have anything along those lines; if it is solely because they are Jewish, then I kind of think it is reasonable to deplatform PiP over it. Many Jewish people are anti-genocide, and it is not reasonable to try to punish an entire ethno-religious group for the actions of Netanyahu, Smotrich, Gallant, Ben-Gvir etc.; it is the same class of generalisation as trying to punish all Palestinians for October 7th (needless to say, genocide and seeking to exclude a group from Mardi Gras are very different ends of the same spectrum).

Two years ago, Dayenu expressed opposition to a very milquetoast call for a mutual ceasefire. They claimed even that claim, which included a call for release of Israeli hostages in Gaza, made Mardi Gras "no longer safe" for Jews.

So yes, they've been pretty clearly on the side of the genocide.