In the second paragraph - where the phrase "show repeated actions" is used - it means people will react (respond to something you do or say) repeatedly in similar ways to similar things. Or that people who get angry at one type of comment, may also get angry at another type of comment - for example, if they like dogs and are angered by comments that show a bad attitude (or fear) toward dogs, they might be expected to also get angry to comments about disliking other animals.
The phrase means you can expect similar upset responses from people when they are upset by words or actions - or similar friendly responses if they interpret your words or actions as friendly to them.
I'm not an English teacher.
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