Hi Alyosha "I am angry with you along with other people..." It could actually mean (A) or (B) But, the context of the phrase is incomplete. SAMPLE: "I am angry with you along with other people who have read your article" [I have read your article, so did other people and we all are angry with you] "I am angry with you along with other people who naturally supports you." [I am angry with you, as well as other people who naturally supports you."] *** (this context, it implies: "I may also be angry with the people who supports you".) Have great day!

I would say it’s in context. If yal are talking about a topic that could be political or like wise about someone other than yourselves than it would be like: They are saying they agree with what you’re angry about, but they are also implying other people are angry about the same thing. If they are currently mad at you then: they are saying they are mad at you and other people that we’re not mentioned but probably all happened during the same event.

I would naturally read it as b), but it could be written more clearly. I am angry with you and others (only I am angry), or I and others are angry with you (more than one person is angry).