Actually, Amnesty USA retweeted about the incident, supporting calling the attackers "steadfast:"
When given a choice to support the International Committee of the Red Cross or criminals, Amnesty backs the criminals.
This isn't the only protest against an NGO being praised by NGOs. Here is UNRWA's Chris Gunness sympathizing with people protesting UNRWA!
Understandable anger: Education is a right. "West Bank Refugees Block Roads in Protest of UNRWA Crisis" http://t.co/M0ar41B7IK RT— Chris Gunness (@ChrisGunness) August 11, 2015
You see, if only we were nicer to the Arabs who keep demanding more and more even from those who are trying to help them, then everything would be OK.
Gunness followed up with another tweet that also implies that throwing more and more money at a welfare society will keep them happy:
Mass #Gaza protests. When I said @UNRWA = a regional stabilizer & our funding crisis had big implications I meant it http://t.co/e8YDe7DGrA— Chris Gunness (@ChrisGunness) August 12, 2015
Gunness is cynically supporting the protests because the more publicity they get, the more Western governments will be scared that Arabs will do something violent - since that is the default opinion of Arabs among the "progressive" bigots who claim to support them.
So we have Arabs who know that when they act violently they will be supported by the very people they are attacking. They know that threats of escalating violence are a form of blackmail that consistently works. And the NGOs happily go along with this infantilization of Arab people because their entire funding structure depends on telling the world that Arab threats and violence are completely justified. The Palestinians, in turn, take this support as evidence that they have a "right" to more and more free Western support, and they are emboldened to keep the threats of violence as their main negotiating tactic.
It is a self-justifying cycle that works great for the NGOs seeking more cash and for the Arabs who demand it.
And the idea that Arabs should be encouraged to act like responsible adults is utterly foreign to these players.
The irony is that all of this freeloading is the exact opposite of the traditional Muslim idea of dignity. The honor/shame mentality has advantages as well as disadvantages, but one of its better features is that it is traditionally dishonorable to take handouts. But the new circumstances, of perpetual refugeehood and victimhood, turns this admirable Muslim quality into a farce, where it is now dignified to demand handouts and an insult to honor to have to work to support one's family. If there is any Muslim complaining about this, however, I haven't seen it, probably because the shame of Jews in Israel is far worse than the shame of retaining victimhood status to eventually remove that source of shame.