Walberg did not write the book, produce the movie, or write the dialogue---How in the world can you write him into any kind of scenario of collusion of leftist or righist actions.
He played a part--and was directed on how too play it.
Some read the author and enjoy his writings but jump on Walberg--I am at a loss on this issue.
Walberg did some bad things and on this account you can justifiably not support him by spending money to see it.
Right or Left is not the issue with him--he has showed that he is a self-serving individual, using both left and right too meet these ends.
The movie, as revued by most ctritics, is just another action thriller, no better or worse than any other, and without any realistic behavior.
I think you may need to be jumping on the author of this book, perhaps the producers and director, and not an actor trying too earn a million bucks or so.
Blessings