Many who are opposed to President Trump’s decision to recognize Jerusalem as Israel’s capital point to the call for violence by Hamas and the scattered violence on the West Bank as evidence that Trump was wrong. But violence should never influence US policy. The leaders of Hamas and other Palestinian groups use violence as a deliberate tactic to get their way. If policy-makers allow this tactic to deter them from doing the right thing, it will only incentivize the opponents of a peaceful resolution of the conflict to threaten and employ violence every time they do not get what they want. Violence should be responded to by police and military action, not by giving in to the unreasonable demands of those who use violence as a tactic.