Those who are blided by Hindu extremism will not respond to any logic because the logic will prove them wrong. They will talk about all other things but the logic!
I can give you a simple arithmatics. Hindu fundamentalists think that Muslim have four wives. If every Muslim takes four wives, only 25% Muslim can get married & the balance 75% Muslims will be left without any wife. Because, in any society, the women & men are approx 50-50%. Actually, the women are little less percent now-a-days.
Will the extremists accept plain arithmatics? Never!