Regarding the protesters at the DNC: I have no problem with demanding a temporary moratorium on sales of offensive weapons to Israel; I'm all in favor of making military aid and sales conditional on appropriate consideration for Palestinian civilian life, which Israel's current military campaign decidedly has not shown. Breaking out of the approved parade route to bang on the fence around the convention security perimeter (which they did yesterday) -- whatever; they wanted to get attention, that's fine, they weren't hurting anyone.
However, the protesters will forfeit their moral authority -- as virtually all of the college protest encampments did -- if they do any of the following:
Express support for Hamas (this includes any display of the upside-down red triangle symbol)
Call for mass violence against Jews and/or Israelis (including the slogans "Globalize the Intifada" or "By Any Means Necessary")
Call for an end not only of offensive weapons sales to Israel, but of US support for the Iron Dome system -- pursuant to the above, this is effectively a call for mass Israeli civilian death
Call for the elimination of Israel (I have heard audio of Columbia protesters chanting "We don't want no two states, we want all of it"; many people using "From the river to the sea" in English don't seem to know what it means, but the Arabic version -- "From water to water, Palestine is Arab" -- is much clearer)
Display any other antisemitic imagery or slogans (this includes, obviously, "Hitler was right"; anything about "Zionist Occupied Governments" or Jews/Zionists controlling the world, especially involving money or puppet-master imagery; caricatures of Netanyahu with exaggerated Jewish features and blood dripping from his mouth, that kind of thing)
Harass random Jewish people
Vandalize Jewish institutions and Jewish- or Israeli-owned businesses
And yes, the entire protest is discredited even if there are just a few people with signs glorifying violence against Jews or expressing antisemitic tropes. If Leftists really believe that principle that "if you're at a rally with one Nazi and they're not immediately kicked out, you're at a Nazi rally," they'd better fucking prove it. I haven't been impressed so far.
