Caused

The bombing of Oklahoma was a very drastic event, but its history is where the real story is.  It was history that truly inspired the bombing, and should be taken into consideration when thinking about the bombing.  The man responsible for the bombing, Timothy McVeigh, was angry with the government because he believed Waco to be a conspiracy brought forth by the U.S. government. 
              A witness claimed in court:
“What did you say about that?
A.  McVeigh said a sheriff should have served the warrant to
Koresh without involving the ATF.  Although McVeigh said he is
sorry for those killed and injured, he said the ATF had no
business being there in the first place.
         McVeigh said those in the ATF were merely pawns
working under the control of government orders.
         The government thinks it has to spend taxpayer dollars
on something, McVeigh said, adding that they saw this as an
opportunity and seized it.
         McVeigh said he believes the government is greatly at
fault in Waco and has broken constitutional laws.  He quoted
the U.S. Constitution and said U.S. armed forces should not be
used against civilians, yet they were used against Koresh and
his followers.
         McVeigh said he does not believe the Brady Bill is a
solution or an adequate attempt at a compromise.
         McVeigh said the Koresh standoff is only the beginning
and that people should watch the government's role and heed any
warning signs”
As far as witness’s claims, it appears as though he was warning the government not to trick the people.  He even states that the bombing was a warning to the people of the U.S. and says that he thinks people should be more careful about what they believe is true about their government’s story.
                Even when he met this witness, she said that he had lots of ideas against the U.S government, and according to her story to the court, had many bumper stickers about not letting the government control you. 
                As time continued from her meeting with him, he decided, for some odd reason, that he would try to make the government, and the people, see that Waco was a conspiracy, so he bombed a federal building in Oklahoma and killed innocent people on the anniversary of Waco.  For some reason, he thought that the government would show they were corrupt, but soon after, he was sentenced to could and was executed by a lethal injection.