1. A long pompous speech, especially one delivered before a gathering.
2. A speech or piece of writing characterized by strong feeling or expression; a tirade.
3.a very long speech

to harangue(vb)

to address (a person or crowd) in an angry, vehement, or forcefully persuasive way
n
a loud, forceful, or angry speech

Got the covid-19 vaccine

An oration, lecture, tirade