What is an opposing argument for "peace and positivity are the best way to deal with conflict."?

Peace and positivity is NOT the best way to deal with conflict. Trying to work out your problems with peace can just make it all worse. For example, if someone slaps you, you would not just smile and nod. You wouldn't just say "Oh, Hi there. Don't mind me. I'm sorry my face was in the way of your hand." You would stand up for yourself. You would either fight back or show them that it is not very nice to slap someone with words. We need to stick up for outselves! Stop the bullies today.   -   I hope this helps with your assignment. I do actually think we should be positive, but the assignment wants an opposing argument, so I came up with this.