This is not the first time Trump or other GOP politicians have called for antifa to be declared a “terrorist” organization. So far, such calls have amounted to little more than rhetoric — but they carry an ominous potential. If antifa groups are composed of a wide range of socialists, anarchists, communists and other radicals, then declaring antifa to be a “terrorist” organization would pave the way to criminalizing and delegitimizing all politics to the left of Joe Biden.