I put homosexuality right up their with a persons choice to be an alcoholic, drug addict, or cheating on your spouse. The common denominator is they are all wrong choices but they are also all yours to make. It is your life to lead however you see fit. Unless your bad choices are affecting my life I won't need to "start" anything, and "starting" anything would only involve talking the matter over.
If you really wanted to change someone having a physical fight over the matter isn't going to solve anything. That is just a sign of an immature character.