We need not tolerate the propagation of unsupported claims without questioning. We need to vigorously challenge those claims with critical thinking and questioning. We need NOT be afraid to challenge the myths that have be developed with little or NO evidence. Ask “Why do you believe that?” of others. You may just learn something and perhaps their reflection MAY just help them realize what they believe may NOT be true.
“It pays to keep an open mind, but not so open your brains fall out.” Carl Sagan
Similarly, we need not tolerate the intolerant.
“We should therefore claim, in the name of tolerance, the right not to tolerate the intolerant. We should claim that any movement preaching intolerance places itself outside the law, and we should consider incitement to intolerance and persecution as criminal, in the same way as we should consider incitement to murder, or to kidnapping, or to the revival of the slave trade, as criminal.”
― Karl Popper, The Open Society and Its Enemies