I need a topic for a research paper under the topic guideline of "Constitutional Law"?

I need a topic for a research paper under the topic guideline of "Constitutional Law"
As it relates to Criminal Justice – I guess.

I’m stumped, any suggestions?
I’m not sure that "juvenile justice system" relates to constitutional law in and ove itself…
of-whoops. it’s been a long week!

Constitutional law regarding juvenile search and seizure…school searches-lockers, etc.