Property law. Just like you are not allowed to spray-paint your messages on the walls of Adobe's HQ in San Jose, you are not allowed to do so here. You are currently allowed to post here on Adobe's private property if you maintain relevant subjects and proper decorum. If you want the restriction of relevant subjects lifted, go to the Photoshop Lounge
And again I am locking this thread. If you want to sue, you know who to sue and when and where to serve papers. If you want to discuss freedom of speech, find some other other place that is dedicated to that topic. Anything else on that subject in this forum will be deleted.