[1] During the interim coalition of the SPD and Greens which governed Berlin in late 2001, Behrendt was a staff member for Senator for Justice Wolfgang Wieland.

[2] In 2011, Behrendt drew attention to the problems caused by booming tourism in Kreuzberg,[6] accusing the SPD–Left government of praising the numbers but ignoring the issues.

[7] He opposed strengthening law enforcement to shut down loud parties, instead proposing limits on overnight accommodation in the borough.

[9] Behrendt is considered a representative of the left-wing of the Greens, and during his time in the Abgeordnetenhaus, he had a feud with the more conservative faction co-leader Volker Ratzmann.

At the same time, he opposed completely free public transit on that basis that tourists should be required to pay to ride, though he was open to dropping fees for Berlin residents.