How much violence does the U.S. Secret Service inflict on the public and on journalists?

The recent assault and battery upon independent journalist Alex Darocy by a U.S. Secret Service agent at the Leon Panetta book promotion talk at Peace United Church prompted me to submit a Freedom of Information Act (FOIA) request to the U.S. Secret Service about acts of violence they perpetrate upon civilians and journalists on American soil. An independent witness verified to me that Darocy was assaulted without warning. They verified the details of his account. I plan on filing a complaint with the Department of Homeland Security Office of Inspector General (DHS OIG) as well as lobbying the U.S. Senate Permanent Subcommittee on Investigations to launch a U.S. Senate investigation into unwarranted violence by the U.S. Secret Service against private citizens and journalists (on American soil).

We must hold them accountable or they will continue to abuse the public and our journalists. This was an abuse of power under color of law: it was a criminal assault. The responsible U.S. Secret Service agent must be fired and prosecuted for an assault and battery under color of law against a journalist legitimately covering a news event.

My initial FOIA request:

https://drive.google.com/file/d/0BxTKPdmfF4X8VHJCdDJQYm5PY2c/view?usp=sharing

The U.S. Secret Service response I received this morning:

https://drive.google.com/file/d/0BxTKPdmfF4X8WXFzVXBIUTd2T19VSWQwZDJFQnBoNXYtc2Qw/view?usp=sharing

Recent scandals with the U.S. Secret Service:

https://www.google.com/webhp?tab=mw&ei=HbaRVI-zCemxygORoYDQBg&ved=0CAUQqS4oAg#q=us+secret+service+scandals