Depends on your country/state. Ask him to redo that section of the video to leave your presence out of it to respect your privacy. If it affects you negatively in any way and puts you at risk, that is also something you can sue for.
I personally am a fan of being able to record any situation you might want to hold people liable to, but another thing completely is spreading it irresponsibly through social networks as a hit piece for an idea that you want to disseminate a biased and caricaturized version of an interview to represent, specially when they might not even be representing themselves in any capacity. I don't think they need to take their video down, they just might need to obfuscate your face and voice on request.
It's funny to see the different types of ideological bubbles on display. They really believe this.