You have an objective to get to you don't stop and wait for the boogerman to let you go there. You advance to get where you need to go and you make things hot for the boogerman while you are moving. He can't concentrate on shooting you if he is worried about getting a bullet hole in his face and if you are moving you are a harder target to hit. If you are shooting and moving you are a target damn hard to hit unless he can call artillery down on you.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.