I need help with DRM (Digital Rights Management)

So I am having an issue.

I am creating an Ezine. I want to have it freely distributed but I want to protect my content so it cannot be ripped off and resold online. Everyone knows that no one respects copyrights of content and the password security in the PDF is a joke as it's easly cracked. I need a solution where my users can download the publication but some unscrupulous person cannot rip it apart and sell my stuff.