Are You Really Acting Out of Conscience If Doing So Causes Irreparable Harm?

The Bernie supporters who are motivated by their conscience not to vote for Hillary even if it results in Trump being elected reminds me of suicide bombers who are also motivated by some misconstrued conscience even if it kills them and takes untold numbers of people along with them. I guess they can die at least in their own twisted minds thinking they were right no matter who gets hurt.