NO MOCKING OTHER PEOPLE'S VIEWS you can say they are wrong but in a nice way, for example something like "Personally, I think your completly wrong" or something like that.
"I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes: first for the Jew, then for the Gentile." - Romans 1:16 "People come and go but the LORD is forever" - Yami Joku