"Whether it’s Europe with radical Islamic terrorism or the U.S. with domestic white nationalistic terrorism, can we work harder to prevent this sort of ideological violence?"
I think, Europe definitely _also_ has a growing white nationalistic terrorism problem. In Germany alone we had 3 massive white nationalist terror attacks between 2019 and 2020: Halle (Yom Kippur Attack), Hanau (Attack on Migrant Businesses) and Kassel (murder of pro-refugee district president). There have been at least three cases of police precincts and one special forces group which were connected to white nationalist terrorism.
"Whether it’s Europe with radical Islamic terrorism or the U.S. with domestic white nationalistic terrorism, can we work harder to prevent this sort of ideological violence?"
I think, Europe definitely _also_ has a growing white nationalistic terrorism problem. In Germany alone we had 3 massive white nationalist terror attacks between 2019 and 2020: Halle (Yom Kippur Attack), Hanau (Attack on Migrant Businesses) and Kassel (murder of pro-refugee district president). There have been at least three cases of police precincts and one special forces group which were connected to white nationalist terrorism.
2018 a Lega Nord member shot six African migrants in Italy (https://en.wikipedia.org/wiki/Macerata_shooting).
2017 Swedish neo-nazis bombed two refugee centres in and around Gothenburg (https://eurojewcong.org/news/communities-news/sweden/swedish-neo-nazis-jailed-over-bomb-attacks-on-refugee-centres/).
Radical Islam is of course horrible and a serious problem but it's not the only significant terrorism threat facing the continent.
Fact. It's just the most recent example.