#No. 4. I think it's important to have some fact about Ayers in this article, or else nobody will understand why he is being mentioned or why controversy about him exists. Noting that he founded Weatherman is about as neutral as you can get  it only has negative connotations if you already know what the organization is and have a negative viewpoint about it.  At that point, you're entitled to your opinion about the guy. If you don't know what it is, you can click the link to find out without first having your opinion informed by all the vocabulary people are freaking out about ("violent," "terrorist," etc).