What are people thinking when they say this stuff??

Mel Gibson, inebriated or not, spouts off at a Sheriffs deputy about "Jews are responsible for all the wars in the world". Then we have another dullard full of his own self importance, Dean Jones; making racial comments on air, when he thought the mike was off...Why make them at all? And then goes on to say it has hurt him in the hip pocket to be sacked, does he not think it has hurt his image at all or is he such a well known HAS BEEN that all will be forgiven?
If such "off the cuff" and sudden comments are not really what the person means or reflective of their ideals...Why are they saying them at all?
If it not something they subconsciously believe to be true or and ideal they hold as a belief...What would otherwise posses them to say it?
It is not the fallacy we have become such a politically correct society that such slurs are now deemed hurtful but the fact that such slurs are motivated and linked to world events, that they are directed at individuals and they are a generalist view of obviously prejudiced people. In years gone by, terms such as "wog", "dago", "skip", were part of the every day venacular. Any kid who wasn't born here was a "wog" or a "dago" , whether born in Cyprus, Athens, Syria, or Sicily..Any kid whose surname name began with the prefix of "O" was a "mick" or a "paddy". Such terms were all encompassing ,and although frowned upon, were part of the melding of our cultures. But these are non definitive terms, they do not point at any one being a terrorist or Taliban or a warmonger or anything else. Even terms such as "cow cockie" or "sheep jockey" whilst definitive in syntax are non vilifying in nature.
At school I had been called a "paddy ", "mick", when I started at a city school I was a "cow cockie", I have been known as a "skip", "grommit" and a "greenie".. I've been called a "lesbo pinko commie" even. Of which I am none. But the fact remains that such terms are non abusive nor entail any latitude of connection to any unsavoury activities such as the comments made by the two aforementioned dolts.
Maybe tertesterone and middle age cause some chemical imbalance in logical thinking.