Parts of Tehran/Iran are dangerous (nobody is denying that), but what we are acknowledging is the objectively high rates of violent and random crime that occurs within the continental United States even within "higher class" areas, let alone lower socioeconomic ones for a supposedly "first world" country. Living here and having been unfortunate enough to both come across and experience it first-hand. Iranians just simply have it MUCH better in this regard, flat-out. It helps that Iranians look like one another (generally), talk the same language and have a shared cultural identity and religion. America on the other hand... lol, it's really beginning to feel like a free-for-all depending on the area. If you're unlucky enough to have been born or end up in a place where the economy is shit or there is lots of gang/drug activity. Odds are you're going to encounter some sort of crime happening either around you or to you. Good thing we have rights to carry firearms although from a moral standpoint, if a society is compelled to need firearms. Then something is wrong with the people/culture/environment. I'll probably end up owning several firearms of my own sooner or later but I need to save up some money first. Such an acquisition comes from a place of fear, not strength or safety (at least for me).
Anyways...America (outside of Canada lol) has a rampant problem with criminality that has recently exploded due to COVID-19, BLM race riots, inflation, rapidly increasing political instability and general tensions along race/ethnic lines. It's a situation that cannot easily remedy itself and will most likely be the impetus that sets the bedrock for America's eventual downfall and dissolution of U.S. as a nation. You could think of it as "Rome burning" essentially.
People here really don't like one another. This is a point I cannot stress enough to those outside of these "United" States. You're race, skin-color, ethnicity, background, attractiveness, religion, political-views, job title, social position, income, wealth: just about any category defining metric will determine how most Americans will either perceive or interact with you. It's nearly unavoidable as well. Like it or not, you're going to put into a group against your will.
There was a time where many American citizens would have identified politically as "center" or "independent". Recently, after Obama's polarizing presidency which saw a dramatic rise in Black Afro-centric political awareness that caused racial tensions to flare up again. That was followed up by a tense 2016 election which saw both Democrats and Republicans (mainly radicalized progressive liberals) resort to utter slander and harassment of the other side. Leading to an election where the majority of people were simply voting so that the other person wouldn't get it in lol. Trump's further radicalization of American political landscape due to his ego, demeanor and how he carried himself as the head-of-state. More or less put in the nail in America's coffin. There really isn't going to be a way for American's to go back to a politically more stable time especially given that the USD world order to eroding away into a firmly multi-polar one.
Idk.... I could go way more in-depth about this but you get the basic idea of what's going on.
To sum it up succinctly, it's a total shit-show.