How can we have an open debate when one side censors the other, through lawsuits, censorship, or even making discussion outright illegal (see Holocaust denial)?
How can you have an open debate when one side uses lies and personal attacks instead of facts?
It doesn't matter how ridiculously wrong the other side is. Doesn't matter if they are NAMBLA, Neo-Nazis, ISIS, whoever. Let them speak their mind and let the people figure out that their arguments are largely full of shit and let the people reject them on merit. Or, if they choose to, accept them.
It DOES matter how ridiculously wrong one side is when their goal is not to win a debate but to DELAY ACTION. By manufacturing controversy where there is none, one side wins.
Arithmetic is being able to count up to twenty without taking off your shoes. -- Mickey Mouse