I would have thought like you----but I checked out the website and the Mexican has links to the radical EZLN in Mexico, she obviously hates the USA, and the website of the Muslim group is extreme anti-zionism and very anti-USA. These are America haters who would most obviously cheer the deaths of the 7000 innocent Americans on Sept 11.
I agree that the website seems to be radical left, but that doesn't justify posting pics, an act which is clearly intended to identify the individuals depicted as guilty parties.
It's an irresponsible, dumb thing to do.