If we accept all that people claim to be true, Kissinger, Bush and Blair et. al. cannot be any exception. Then what suggestions one gets from the correlation between "upholding democracy and human rights" and the butchery in brutally murdering tens of millions in the last several decades (from Algeria to Cambodia to the genocides in Iraq through sanctions and slaughtering)?

The correlation is simple: A bunch of fanatics has managed to hi-jack a substantial portion of their youths who are vulnerable because of their age and outlook on life nominally sharing the same faith with their handlers who they look up to, and doing their deeds for them (because they're too old, too cynical or too cowardly to do such deeds themselves).

So the correlation is strong but a lack of tolerance will fuel the generation of more of these, not less.

Correlation vs. causation fallacy.