Conversation so far:
What has modern life done?
Amish have felt pressures from the modern world.
What pressure?
Issues such as taxation.
What other issue?
education.
What is another issue they face?
law and its enforcement.
What was the next issue they faced?
sporadic discrimination and hostility from their neighbors.

Question: What has this caused?
Self-contained rewrite: What effect has sporadic discrimination and hostility from their neighbors had on the Amish?