These are the article, which are problematic. First one calls for riot/turmoil ("Krawall"). Second one has instructions for violent protests.
They are using communist/socialists emblems. Their statements indicate that they do not like the current capitalist society and want to abolish it: "freedom from want"; "world without oppression or hierarchy, where power is shared equally" https://riseup.net/en/about-us
Do you have the original website text/archive?
> Also riseup is a communist organization.
They appear to be pro-democracy, anti-authoritarianism.