Texas v johnson, hazelwood v kuhlmier and engle v vital all involved questions about what

Well Texas vs Johnson was concerned with the protest that burned the flag of the unites states of America. Engle vs vital was about separation of religion in schools by having morning prayers in public schools. Hazelwood vs kuhlmier was concerned about students publishing whatever they wanted to in school newspapers and if the principal had the right to stop an article from being published. They all have the part about protesting one of the core beliefs in the constitution whether it is free speech or freedom of religion and our right to protest