The Defenders isn't too controversial, and those stories that went that route (abortion, euthanasia, race relations, etc) are among the more interesting I would think. One wonders why the Emmy-winning series was kept out of syndication for so many years. I could never find The Defenders on TV anywhere.
I can't stand Perry Mason because I don't like Raymond Burr, but E.G. Marshall was a terrific actor. For 8 years in the 1970s and early 80s he was the original host of The CBS Radio Mystery Theater, and he only acted in the show twice (playing Scrooge in their version of Dickens' A Christmas Carol in one of them).
A couple of months ago I found some complete episodes on a website chock full of rare TV shows. They're 16 mm film prints and the only three of The Defenders I could find, but they're watchable....or at least they were. GUBA.com removed them due to copyright violation.
