There is certainly stupidity, cupidity, neglect, idleness and ignorance. Mankind's endless ability to fuck things up is seemingly matched only by our ability to not recognise when we're headed directly for Fucksville... in a hand cart.
Adolf Hitler wasn't evil. I don't even think he was particularly insane. His actions were the result of a cascade of events that he thought were rational and nobody at the time felt particularly inclined to nip in the bud. Similarly the bankers, who are currently being blamed for everything, including quite possibly, Hitler, weren't evil, they were just doing what we all let them do, most likely because 'we' didn't understand what 'they' were up to.
Cats aren't cruel, dolphins aren't kind and weeds have no idea they are weeds. I think this goes a long way to explain humanity. Occam's razor essentially tells us to seek the simplest solution. And amidst the charges of evil, inhumanity, global plots, conspiracy theories and every other possible explanation for the fuckwittery perpetrated by man on man, the simplest and most consistent conclusion is that we're a bit thick.
And that's about it, really. That's so much less stressful than trying to find blame and solutions. So, enjoy your bank holiday and try not to think too hard about it all. Get out in the garden and get yourselves on the outside of a nice Shiraz. Cheers!