Final answer:
True. During the Anti-Irish Riots, nativists burned down two Catholic churches and a schoolhouse as an act of hostility towards the Irish and their religion.
Step-by-step explanation:
True. During the Anti-Irish Riots, which occurred in the 19th century in the United States, nativists expressed their prejudices against Irish Catholic immigrants. They targeted Catholic institutions, including churches and a schoolhouse, burning them down as an act of hostility towards the Irish and their religion.