Why does Iran execute protesters instead of allowing free expression?

Why not have freedom of expression and press? So what if someone says "Khomeni is a dingbat"... who cares?

Is it fear? pride?

It casts the world against them. It's unwise.

Why does Iran execute protesters instead of allowing free expression?

https://www.foxnews.com/sports/mojtaba-khamenei-regime-executes-champion-wrestler-iran-intensifies-brutal-crackdown-during-war

They also just executed a Swedish person they say was a spy.

Why does Iran execute protesters instead of allowing free expression?
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