"Carry the battle to them. Don't let them bring it to you. Put them on the
defensive and don't ever apologize for anything."
This should be somewhere where every Democratic candidate can see first thing every morning, last thing evey night, and at the beginning and end of each meal. It should be burned into their consciousness. Every time they apologize, whatever it is for, the other side gains at least a small victory. Politics is street-fighting, not fencing.