Roger Williams was the first person to come to rhode island
These are the circumstances under which the protest of the students in Tinker v. Des Moines would be deemed unprotected speech:
if their action had clearly threatened order and safety.
And since it didn't, there was no reason for it to be deemed unprotected speech.
The role of government was that once the Roman empire established and made christianity the main religion of Rome, it esentially formalized the possibility of christians to take over the religious practice in this empire and gain increased power.
The answer is trade barrier.
thx