There's one in the comments of yesterday's Paul Graham Twitter thread where someone prompted Gemini with "Generate an image of German soldiers in 1943" and it came back with a picture of a black guy and an Asian woman in Nazi uniforms on the battlefield. If you specifically prompt it to generate an image of white German soldiers in 1943 it will tell you it can't do that because it's important that we maintain diversity and inclusion in all that we do to avoid damaging and hurtful stereotypes.