There was once even an easy to use software that shipped with an attack. It was called Firesheep and it let anyone skillful enough to install a browser extension get into the Facebook and Twitter sessions of anyone who shares the same network.
That's kind of what Socrates did. Not everybody thinks it's acceptable (just look at how well it turned out for him), but it's important to challenge all beliefs.
Well, living in Chile, I've learnt that there's no racism here BUT:
-There's classism, a lot. Both from the lower classes to the upper and vice versa. There's also a lot of anger left from the various dictatorships that ruled in the eighties.
-In some countries, here included, there's also big prejudice against native cultures like the Mapuches. "They're all lazy drunkards".
These problems mostly stem from colonial times, where the Spanish didn't respect native culture and since the Europeans were seen as the "civilized, more advanced people", the aristocrats here did everything to imitate their lifestyle.
To add (and replying to rco8786): I think this is not racism. Because ethnicity is not race, and almost everybody by now through mestizaje has native blood. The early colonial period might have a racist component with "sistema de castas" (Spaniard born in America = Criollo, Spaniard with Native = Mestizo, Spaniard with African slave = Mulato, so on).
But now race doesn't even matter because we are all almost the same genetically (it just happens that at least in Chile, the fair-haired blue-eyed people are the richest, but hate here is about wealth and politics rather than race itself).
Americans don't use the word "racism" literally. What would that even mean, unless we all walked around with DNA testing kits? Anything involving culture, ethnicity, national origin, any kind of xenophobia can be consider 'racism'.
Well, Android and most RHEL-derivated distros use SELinux and it can mitigate this kind of problems (assuming it is well configured) and Ubuntu has "AppArmor" but I don't know if it mitigates this issue as well.