Also, just to sodomise your point, then flip it over and give it to it again:
1st picture: a crime committed by predominantly Saudi, radical Wahabist militants that did not involve a single Palestinian.
2nd picture: A crime committed by predominantly Christian, radical German militants that did not involve a single Palestinian.
3rd picture: A flag-burning protest, which is perfectly legal, no matter how much one might like there to be limits to our liberties, to make Ted Kennedy pay, etc.. Not a crime, no one harmed, and involving a wide range of ethnic groups, not just Palestinians.
4th picture: Ditto.
If you're going to find something to attack Palestinians over, you could at least find something bad that they've actually done. You know, like the Munich attack? At least then you might have a (still racist) point.