The only possible way to value and protect human life is to value and protect human rights, and that includes free speech. The minute you subsume those for safety (or as you put it, "human life", but we've also heard "for the kids", "terrorism", "immigrants", "communists", "monarchists", etc. etc.) you have not only given up your rights, but your life to the powers that be. And those powers do not have your best interests in mind.

These things are not separate, please do not turn this into a false dichotomy. We must protect both human rights and human life, but only by the acquiescence of our rights may they take our lives.