Stop being condescending. The truth will always prevail. Start using simple facts and let them decide for themselves. This is is only way. Those who cannot see, will never see. Move on.
"The truth is like a lion, it needs no protecting. Let it roam free and it will survive."
Facts are facts, they need no defending or explanation. Frankly, trying to convert never works, it only entrenches those wanting to be so dearly right. So stop. Those who are awake are ready to explain. Wait for their question.