In Islam's case, however, you are part of a body politic, who will suffer the consequences of your, and any ignoramus you would tend to convince, soft headiness.
Get educated and get hard. It's not too late even for liberals.
"Diseases desperate grown/By desperate appliance are relieved, Or not at all."
You are the one who needs to talk with someone who has some sense. You can't stomp out Islam, even if you murdered every last muslim and burned every last Koran.
But by all means, try! Have a blast!