The governor says Minneapolis is 'under assault'. Who is behind the protests?

Minnesota’s governor, Tim Walz, blamed “elements” of domestic terrorism, ideological extremism and international destabilisation for what he called an assault on Minneapolis. Black community leaders suggested the destruction was led by white supremacists and anarchists intent on destroying the state.
https://www.theguardian.com/us-news/2020/may/30/minneapolis-protests-george-floyd-outsiders-looting