Say what you will about these folks, but they were there to report on the G20 protests. A member of the mass media was directing Antifa to find and do something to these foreign journalists, and people were reporting their whereabouts to the people following them. It's a matter of record.

https://youtu.be/Io3VpyL4RoE

While it does not justify the completely inappropriate behavior, it might make sense to mention for context that one of the authors of the video is a right wing activist/journalist according to Wikipedia [1].

The claim that Germany is a country where foreign journalists in general have be afraid of being chased is unfounded. This was an incident involving so called right and left wing "activists."

[1]: https://en.wikipedia.org/wiki/Lauren_Southern

It should be noted that this "member of the mass media" was an unpaid writer (among dozens others) on an activist blog/oped section on a large newspaper's website. He was since removed from the site because of this incident.