(Hint: Students do not have a First Amendment right to make obscene speeches in school.)
Matthew N. Fraser, a student at Bethel High School, was suspended for three days for delivering an obscene and provocative speech to the student body. In this speech, he nominated his fellow classmate for an elected school office. The Supreme Court held that his free speech rights were not violated.
The answer should be Arizona v. United States (2012). One of the main points brought up by this ruling was an Arizona state-law making it a crime for being unlawfully present in the United States. This made it more likely for a Hispanic person to be racially profiled by law enforcement.
I hope this helps! :)