He spoke, among other things, of our seemingly increasing inability to discuss politics across party lines in a civil manner, of the tendency of some to "criminalize political differences", and of major media outlets increasingly taking sides in lieu of the "honest broker" role most of them once tried to play. In short, it was a series of thoughtful and clear eyed discussions of several present day issues and the dynamics currently surrounding political discourse in our country.
In fact, the event itself was an example of the sort of tone that, in Professor Dershowitz's stated point of view, political interactions should have in this country. Here you had a self proclaimed liberal thinker, a man who has done verbal battle with Bill Buckley, addressing a room full of (mostly)Texas Conservatives having his remarks periodically interrupted by applause and then getting a standing ovation at the end!! I wish you could have been there.
But in lieu of that, I recommend you obtain a copy of Professor D's book "Trumped Up" which explains one of the several points he made on Wednesday. That being, how "criminalization of political differences endangers democracy" though a series of essays and opinion pieces written over a period of time and which address important issues of politics, the Constitution and the Law. I found it fascinating, and I hope you will too.