This act of vandalism is their most recent attempt to bring the King's attention to the issue. The portrait of King Charles is not the first painting to be vandalized by activist groups.

The first official portrait of King Charles III has been vandalized by a group of British animal rights activists. Activists from Animal Rising, a non-violent organization campaigning for an ...

King Charles III's portrait in Philip Mould Gallery in London England, was vandalized by animal rights activists. Prince Harry opted out of attending the wedding of longtime friend Hugh Grosvenor ...

Artist Jonathan Yeo and King Charles III stand in front of the portrait as it is unveiled at Buckingham Palace on May 14 in London. (photo by Aaron Chown-WPA Pool/Getty Images) Success!