The reactionary Iranian regime has sent its thuggish security forces into the street to stop the demonstrations. The regime is determined to intimidate the population and stifle dissent. Thousands of people have been killed to date.
Trump says he supports the Iranian demonstrators. In the meantime, however, he has sent a large force of his thuggish ICE agents into the streets in Minnesota. This has been done primarily to intimidate the population and stifle dissent, not to identify and capture illegal immigrants who represent a genuine danger to the community. One person has been killed by an ICE agent to date.
This is a difference of degree, not kind.