Twitter Account Suspension

My Twitter account was suspended last night because I was notifying people who've had interactions with @skippy (the peanut butter brand) about their practice of selling high value peanut oil from peanut butter manufacture and replacing it with unhealthy and environmentally unsound palm oil. I'll admit that I was posting a lot with the #boycottskippy hashtag, and a url to an anti-palm-oil website (with which I am not affiliated, even as a donor). So my question is, should my account have been suspended for this behavior, or could this be a case of a publicly owned Twitter protecting potential sponsors?