"The establishment media and the Southern Poverty Law Center are again floating the talking point that militia groups and worried gun owners are growing in the United States and that this could portend a violent act of domestic terror, despite the fact that every major domestic terror attack in the 1990’s was carried out by the federal government itself, from Ruby Ridge, to Waco, to the Oklahoma City bombing. "
There is enough information to believe the government did Oklahoma City. If you go back and look at the news clips and articles I believe it is easy to come to the conclusion that it was a government run operation. They had eyewitness on that day on news broad casts who herd two blasts.
Notice after that bombing they went on to squashing the militia and states rights movement. The media demonized gun owners and anyone who questioned the Fed's authority
Full article and links at Infowars