If I remember right the accusations came after Roger Waters made anti-Zionist statements.
I agree with musicians being suspect and I'm a true audiophile. Hate to think that all this music I literally grew up on is tainted. Posted this several times here, but for anyone interested in how all your favorite American classic rock groups are connected to the post-WW2 military INTELLIGENCE complex, read this incredibly well researched series on Laurel Canyon:
http://
centerforaninformedamerica.com/laurelcanyon/