I disagree. We are presently unable to control and prevent the perpetrators of these heinous acts and those who support them as we balance civil liberties, privacy, etc. with security/safety. We can and should do our best to discourage those among us who would retaliate indiscriminately against a particular population based on any emotion (anger/hate). I am not fearful of anger/rhetoric directed at the actual perpetrators of these heinous actions and those who sponsor them. I do fear, however, that some of those who fan the flames through expressions of anger and hate at those other than the direct participants and those who sponsor them in times like these really don't care whether their anger actually leads to any meaningful action other than satisfying their own emotions and enciting themselves and others to engage and endanger people who are not part of the problem. I don't think this makes us safer in the short or longterm. During the campaign, Trump said we should kill the terrorists and their families. I'm opposed to that thinking and policy. I'm also opposed to simply carpet bombing the entire middle east until nothing exists to demolish those who are engaged in these actions. I'm opposed to those who cry for a "final solution" against Islam.
We need to be smarter, not angrier.