First of all, I congratulate you on your English, which is grammatically correct, makes perfect sense, and seems reasonably natural, although I would perhaps put it just a bit differently.
Rather than “is it valid?” we usually say “is this correct?”
While “improve awareness” is perfectly valid (I can say that, because I’m an English teacher ;), and we do use that phrase occasionally, the more usual collocation is to “raise awareness.”
The phrase “crime and law” is correct English, but it is not a standard phrase, and I don’t really know if watching criminal trials on TV is the best way to learn about crime. Personally, I would say something like “the criminal justice system,” or maybe “crime and punishment.” Um, wait, “Crime and Punishment” is the English translation of a famous 19th century Russian novel. I think the copyright has expired….
EDIT: I noticed that I had somehow omitted the words “is” and “a” in the first sentence of the last paragraph. I’ve gone back and corrected those typos so as not to confuse the learner.