Anti-Catholicism resurged from the left while anti-radicalism resurged from the right.

Evidence

While the prevailing, progressive spirit confined anti-radicalism to right-wing groups, anti-Catholicism reappeared in an entirely different quarter. About the same time that foreign revolutionists were beginning to excite conservative nativists, a dread of foreign Romanists came to life on the nativist left. Both fears emerged out of the increasing restlessness of the day: one as a reaction against it, the other as a perverse expression of it. — John Higham, Strangers in the Land, 1055

Categorization

• XREF: Confirms the manufactured-enemy hypothesis: the same social restlessness projected fear onto Rome from the left and onto revolution from the right. — connects to: Republicans manufactured anti-Catholic issues to replace discredited Reconstruction themes — John Higham, Strangers in the Land: Patterns of…, 173