It’s an anti climate change ad , they are removing blatantly wrong information. It’s not like it’s censoring legitimate research or something, it’s removing garbage ads.
Damm.
>As a result, content that calls into question or denies the scientific consensus around anthropogenic climate change will not have Google advertising alongside it. In addition, Google will no longer run any advertising that "contradicts well-established scientific consensus around the existence and causes of climate change."