I'm not saying the Iranian government doesn't do bad things - it absolutely does, though you could (easily) argue that the US has done far worse. Hell, you can also (again, easily) argue that the US and UK are largely responsible for many of the past wrongs of Iranian governments.
As a singular anecdote from 21 years back, I spent a couple of weeks in Iran way back in 2000 (my father was working there as a geologist for an oil company and I joined him during the summer holidays) - things seemed very different than I'd been led to believe. I felt completely safe wandering Tehran alone, and everyone I came across seemed extremely friendly and curious. They seemed to know how their country was portrayed outside of Iran, and wanted to show me otherwise. People talked freely about politics too, expressing likes and dislikes just like any western nation. And the food, my word the food...