The First Amendment was enacted as a protection not of the speech the majority likes and agrees with – it doesn’t need to be protected. It’s there as a safeguard against those who would usurp the power of government and use it as a weapon to silence the thoughts and ideas of people whose ideas are regarded popularly as bad, inappropriate, repulsive, or ignorant.
Free speech isn’t irresponsible. It merely demands that a society that has it be responsible to confront bad ideas not with brute force but with better ideas. If you have a politically correct, speech silencer in your family – or a friend who is convinced Ted Cruz is a nutjob, make them watch this short video. They both might be surprised.