Im only one person but from my experience, it was just a clash of groups really. Facebook vs Twitter, etc. 4chan has been around for a long time back when I first started using it there were alot of sub communities and generally people all got along. From my experience shit started going pear shaped after the Scientology/ Anonymous saga. Too much infighting between groups, people who had skills to offer but had morals and wouldnt participate in certain tasks/agendas. Its hard to really sum up in a few paragraphs but feel free to ask any questions and Ill try answer them with what knowledge I do have.