I guess what you have in mind is that Aaron Swartz was arrested by the MIT Campus Police (together with a Secret Service agent). This is not oppression by MIT. The MIT Campus Police received the arrest warrant from a federal prosecutor (Carmen Ortiz) and they needed to carry out the arrest. They did not have a choice in the matter.
If anything MIT was the opposite of what you portray them to be. They had an open campus policy at the time (they stopped that during Covid). Anyone could wander inside the campus and walk through the MIT buildings, and in some cases could access computers, which Aaron Swartz did in order to download articles. Actually, MIT helped Aaron in carrying out his mission.
As for MIT helping the US military, yes, they did and they do that. I'm proud of it. If you think the military is bad, you haven't been paying attention lately, especially in the last one year and a bit.