I know the feeling dude, i had a really good channel, was making good money but all of sudden it got suspended. All the years of works just gone wasted.
It is not easy to use some of the Google Products such as Youtube and Adsense. You must be careful. No spam. Anytime Google can deactivate your account. I think some of your videos are not unique.
I think that you have misinterpreted what copyright means. You found videos on Twitter and Facebook, where the videos were shot with cellphones, and automatically assumed there was no copyright on them. Well, the copyright is with the person who recorded the video. It's enough that one of these persons complain, and your channel is removed. It could also be that you posted unallowed content. Look at the terms of use, for further information on this.
By the looks of it, you're suspended for taking content from others and spamming. Have you heard from them though?