Here is another excellent video regarding different types of psychopaths and their modus operandi. This time a little shorter - 38 mins
And here is a link to a pdf of the transcript
Below is an excellent one hour talk by Thomas Sheridan regarding the psychopaths' influence on our society; how they think and what their agenda is.
Thomas also explains how we are a threat to them together with some useful tips on how to deal with them (mostly at the end!).