Like you, I think the PBS show was a good start at understanding Putin crimes and his autocracy.
http://www.pbs.org/wgbh/pages/frontline/putins-way/
It was good I saw it last night
At first back in 1990s I thought ole Chechens might be Vlady little KGB buddies LOL!
I think Reagan was right Soviets were Romanov without class