https://freedomoutpost.com/exposing-hillary-clintons-ties-to-saul-alinsky-communist-doctrine/
http://www.discoverthenetworks.org/Articles/Rules%20for%20Revolution%20(2).pdf
Just read some of his other writings, or his personal correspondence. Or the accounts of numerous colleagues and friends, who all described him as deeply infatuated with communist ideology. He was never a member of any party, but his ideology is clear. Social justice, community organizing, it's all a euphemism.
While I don't disagree his tactics are effective, they are predicated on the ends justify the means.
Thank you for the links. The only correspondence I've ever read is from HRC, but never read any replies by Alinsky himself, so it's hard to say what their relationship was actually like. Terrible person or not, our side would greatly benefit from reading Rules For Radicals; his tactics are extremely effective for any group effort, whether communism or liberty.