As far as I remember, SOAD said that Toxicity lacked swearing because they wanted to prove they could write a record without swearing as a sort of maturity thing. Normally I wouldn't be too inclined to believe such a tale, except that as far as I remember their newer albums have included swearing, not to mention gratuitous references to porn, drugs and whatnot. So, y'know.
Johnny: They also blow loads of money on co-running a charity and publicising the Armenian genocide, among a variety of other activist type causes. I don't know if you want to be congratulated for your personal efforts, which are obviously admirable, but all I wanted to point out is that System of a Down, despite whatever you think of them, are a positive force with good intentions, who have managed to achieve commercial success and fame whilst promoting some relatively radical messages to people who might not otherwise here them, and should be respected as such. I know a good few people who have been politicised in the right (well, left) direction by SOAD, me quite possibly included. Even if their message is only actually getting through to a relatively small number of their listeners then at least it is getting through, and they are, however ineffectively from our principled (and poor) standpoint, using their fame and money for some sort of positive ends, which makes them a damn site more admirable than most successful bands I can think of.
