https://en.wikipedia.org/wiki/Photobombing
Explicitly forbidden in China by the law: Real username law (2015).
See also:
Marina Ovsyannikova (Марина Овсянникова, 2022, anti war poster on live news)
Screen name keyword attack (网名审查关键字攻击)
Appropriation attack
Sport event live broadcast image attacks (体育赛事直播图片攻击)