Well basically Malcolm X was a modern-day Julius Caesar since he was murdered by the same people who helped him get started as a spokesman and they were both thought to be leaders by others. A difference in them I guess would have to be that Julius Caesar was an ancient European ruler from noble roots while Malcolm X was an African-American ex-convict turned political and social leader.
Sarcasm is an ironic or satirical remark tempered by humor. Mainly, people use it to say the opposite of what's true to make someone look or feel foolish. For example, let's say you see someone struggling to open a door and you ask them, "Do you want help?" If they reply by saying, "No thanks. I'm really enjoying the challenge," you'll know they're being sarcastic. Sarcasm is all about the context and tone of voice, which is why it works better verbally. It's something you'll know when you hear it.
