"Since when is Hezbolah an "Iranian" force"" Since It was created.

http://en.wikipedia.org/wiki/Hezbollah_(Iran)

"Ansar-e-Hezbollah is a militant ultraconservative Islamist group in Iran. It revolves around the figure of Ayatollah Ruhollah Khomeini and his ideological thought. Mojtaba Bigdeli is a spokesman for the Iranian Hezbollah.

They wear civilian clothes, even though they are on government duty. They are said to attack peaceful demonstrators that aren't part of government-organized demonstrations.

They are called upon to put down riots before the police force are called to resolve the issue through traditional methods. Members of Ansar-e-Hezbollah, who typically dress in plain black clothes, are known for attacking protestors using bars, chains, and other such weapons from fast moving motorcycles. They often disappear or 'stand-down' when the normal police appear.

Currently this group is said to be seeking revenge on a group of Iranian students seen burning a picture of President Mahmoud Ahmadinejad during his recent visit to Tehran's Amir Kabir university"