Trump tweeted on Saturday that the activist group is made up of "gutless Radical Left Wack Jobs," who mess around and beat (non-fighters) people with baseball bats over their heads. He said one step was taken to refer to the movement as "a major organization of terror (along with MS-13 and others)," referring to international criminal gang Mara Salvatrucha.
His tweet followed the introduction of a resolution by The Republican Sens. Ted Cruz and Bill Cassidy, with the aim of identifying the group as "domestic terrorists".
But the call triggered a flood of tweets in the US and Germany, where #IchBinAntifa – I am Antifa – started on Twitter in the trend.
Several users who used the hashtag referred to the German history of fascism and anti-fascist resistance during the Nazi era.
Krsto Lazarević wrote.
Another user added in a tweet that was retweeted hundreds of times: "#IbinAntifa Because history teaches us how fragile democracy and the rule of law are when giving right-wing extremists power."
Ger The daily newspaper Neues Deutschland added that they were "outraged" that Trump considered the name of the group terrorists.
Antifa, whose name stands for "antifascist", has become increasingly visible as a white man since the protests in Charlottesville in 201
The term is used to define a broad group of people whose political beliefs are leaning to the left – often to the left – but not compliant with the Democratic Party platform.
The group has neither an official leader nor a headquarters, although groups in certain states hold regular meetings.
Jessica Suerth and Leah Asmelash of CNN contributed to the coverage.