The current events part of you situation should be simple. Just go online and look at recent news. Once you have found 5 topics you like its time to rap. Now I know I am a white boy and you are probably think this kid can't rap. If you are. You are right, but I can give you a few suggestions. Rapping is not about rhyming.
It is all about picking words that flow together. Changing how you say and pronounce the word is also what it is about. Secondly it helps if you have a beat to rap to. This might be challenging to make happen but it is a suggestion. Lastly you've got to have fun with it. Don't stress it. Take your time exploring multiple ways of saying the same thing. Till you find the lyrics that fit what you're talking about.
I suggest you look up raps on youtube to get some Ideas.