Much of the criticism of Israel is based on anecdotal evidence divorced from context. This actually isn't particularly surprising, since a balanced and well informed narrative would require far more effort from the reporters, and in most cases it would be less useful for the purposes of proving how awful Israel is, because in most cases knowing the full context and story would show that Israeli isn't so bad, after all.
Another component of the anti Israel propaganda efforts, beyond simple ignorance and malicious ignorance, is the Palestinian willingness to - how to put this - embellish on reality. I'm not - NOT - saying that all Palestinians always lie, and that if a story comes from Palestinian sources it's automatically wrong or even only probably wrong. That would be far too broad a statement to make. What I am saying is that since the Palestinians have an obvious interest in portraying themselves as helpless victims of Israeli brutality, and in most reports the Israeli side isn't asked for it's version, it behooves any fair minded consumer of the reports to think about them a moment before accepting them at face value. Western publics (and their journalist representatives) often don't have the qualifications to judge the plausibility of Palestinian horror stories. I'm reminded of the young Palestinian in Jenin in April 2002 who was quoted the world over as having witnessed how an Israeli tank flattened rubble over a mass grave of gunned Palestinians: you'd have to have some acquaintance with tanks to know this story was always physically impossible, and who in the West has that experience?
Noah Pollack gives us a recent example. Mohammad Omar, a Palestinian reporter famous for his horror stories traveled to Europe to receive a prize for being so courageous, and on his way back invented another horror story which, unfortunately for him, someone checked.
And note especially comment number 5. Charlie from Colorado points out that even without the investigation into the story, the initial version proclaims its falsity. In order to be dramatic, Omar has one of his Israeli tormentors engage in some gymnastics that can't be done.
Don't expect Omar's prize to be revoked any time soon, however. More likely, the next time one of his fairy tales is quoted at length, the journalist will add that he's the recipient of a prestigious prize and therefor must be telling the truth.