The definition of 'normal' that I use is 'that which occurs naturally'. There are vast numbers of physical and neuro divergences all of which are products of nature. I myself, for example, am left handed. When it comes to free speech ( or should I say free opinions ) I feel we have the internet to blame. Decades ago people would stand on their soap box and be heard by a couple of dozen people. Now, with retweets, their reach is global and their capability to trigger thousands is out of all proportion to their relevance. It gives all the wrong people the equivalence of a sugar rush.