Answer: they wanted to escape religious oppression by the Catholic Church :)
Explanation:
Because Romeo is from a different family and the enemy of Juliet's father I think
But both them don't care their family's past they were only thinking of a peace between their family and fell in love
This is just a I guess I don't really know the full story of Romeo and Juuliet
But hope this help
ps i'm only 13
If you are talking about Nazi German its because Hitler didn't like them and they went to concentration camps (wouldn't mind brainliest)