RihannaSince her new video for “Man Down” hit the net this week, Rihanna has come under fire by watchdog groups for depicting what they call a “cold, calculated execution of murder” in the clip.

At the beginning of the music video, the singer is guns down a man in the middle of a crowded train station. Later in the clip, the man is revealed as a rapist who attacked her a day prior.

Despite a strong message of women fighting back against abusive men, the Parents Television Council (PTC) is outraged at Rihanna’s suggestion that killing a rapist is a proper form of justice.

Furthermore, they don’t agree with her rationale that it sends “a very strong underlying message 4 girls like me,” which she tweeted to her fans shortly after the video’s release.

(Watch the music video for “Man Down” right here )

Another group, Industry Ears, says, “If Chris Brown shot a woman in his new video and BET premiered it, the world would stop. Rihanna should not get a pass.”

PTC — who previously took issue with Rihanna, along with Britney Spears, for Billboard Music Awards’ opening performance of “S&M”, likening it to a “Vegas stripper show” — also directed their outrage at BET for airing the video.

Thursday (June 2), Rihanna fired back at her critics in a series of tweets, calling herself a “rock star” and added that the music industry isn’t “Parents R Us!”

“I’m a 23 year old rockstar with NO KIDS! What’s up with everybody wantin me to be a parent? I’m just a girl, I can only be your/our voice!” she tweeted (@Rihanna). “Cuz we all know how difficult/embarrassing it is to communicate touchy subject matters to anyone especially our parents! And this is why!Cuz we turn the other cheek! U can’t hide your kids from society,or they’ll never learn how to adapt!This is the REAL WORLD!”