Returning green card holder, who have always been subject to scrutiny. His treatment was absurd and unacceptable, but not a situation that would be faced by an ordinary tourist or business traveler.

I'm not sure I understand this.

A "green card" is a document showing permanent US residency. So it's something you "earn" after living lawfully in the US for several years.

Why would it require <<extra>> scrutiny compared to anyone else entering the US?

They always check to make sure you are not abandoning your residency

What is meant by "returning green card holder" exactly? Return from a holiday abroad outside of the USA, or leaving the USA to live elsewhere for some time with no obvious intent to return?

A US green card holder leaving the country and returning for any reason

A permanent resident getting beaten is not a concern to you? Tourists have even less rights in US view than those, your arguments seems lacking any logic.

I wanted to bring my family to US for few weeks vacation but fuck hell no, you don't go to places where they insult and attack you for no reason.

It’s a major concern for me! But not something that is affecting normal tourists