It's a redundant sentence because it does not need to say "over and over" and "and repeated it. Also those two phrases are double negatives. It could also be called a run on sentence.
It could be both, maybe they hurt themselves because they want to call some attention or it could also be their way to feel better with themselves
The news sources form of the speech might not have the speech entirely, meaning that the clips they do have could be easily taken out of context.
A personal reading of the transcript has the full speech, and it can be interpreted fully without anything being taken out of context.
Allusion. Shakespeare references prominent characters in Roman mythology.
Hope I could help!
