Complex sentence: However, the far-right is overwhelmingly rejected by the anti-globalization movement, with groups such as Peoples Global Action explicitly rejecting racism, and many within the movement also active in anti-fascist groups such as ANTIFA.
Split into simpler sentences: However, the far-right is overwhelmingly rejected by groups such as Peoples Global Action. They explicity reject racism, as does another force in the anti-globalization movement, the anti-fascist groups such as ANTIFA.