US evangelicals have been operating both online and in EU soil for a while now. On Twitter a few years back they were not that sophisticated, with accounts pretending to be local citizens, easily unmasked by the handle names, poor understanding of local culture/references, and use of bad translations/US English terms.
In Ireland in particular they have been quite active since the marriage equality and abortion referendums, and now they seem to have switched gears to instigating anti-immigration sentiments.