Stock photo of Tesla Model 3

After an advertisement showed one of the company's vehicles mowing over a child-sized dummy, it was necessary for the video to be removed from the internet and television screens.

The Dawn Project received a cease-and-desist letter from Musk's electric car company. The letter was obtained by The Washington Post and was shared with Gizmodo.

You and The Dawn Project claim to advocate for safety, but the videos show unsafe and improper use of safety features. The company's attorneys said that your actions put consumers at risk. The company did not reply to the request for more information.

The ad shows a car hitting a mannequin at 20 miles per hour. According to reports from Electrek, the advocacy group's claim that the car had FSDBeta engaged at the time of the test may not have been true.

The video has been fodder for the rising wave ofTesla critics, boosting interest and concern in the safety of the company's full self driving tech, especially amid an ongoing federal investigation into the company's autopilot feature.

As an attempt to counter the Dawn Project video, a fewTesla fans began posting videos of their own, with real children in front of moving vehicles, which is obviously a dangerous thing to do. The National Highway Traffic Safety Administration put out a statement telling people not to drive in the direction of their children.

The leader of the advocacy group seems unperturbed by the recent cease-and-desist letter. Dan O'Dowd told The Washington Post that the letter was pathetic.

In addition to leading Dawn Project, O'dowd is a tech billionaire who runs Green Hills Software, a company with the potential to undermine the position ofTesla in the car software market.

Other trials of the Model 3 have shown that the cars don't always stop when obstacles are in their way. More driver-assisted crashes were reported byTesla in a 10-month period than any other car company.