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procession
The barricades are in place to keep the people from interrupting the procession.
The term for people making an entrance is a procession. The graduating class forms a procession and no one sits down until all have entered in most school graduations.
so they can get to the place where the mass is and they can get there quick with out traffic and follow the other people
No you have it backwards they drive with them on anytime during the day.
A parade.
Procession is a group of people, vehicles, or objects moving along in an orderly, formal manner.
A procession is a parade, a long line of people or vehicles or animals going in the same direction, one after the other.
Parade
Presumably a procession of people. Motorcade = procession of cars Cavalcade = Procession of riders on horseback (from Cavalcare = to ride) Alternatively, and looking at other similar questions, it means your spelling leaves something to be desired.
procession
No.