A gentleman was arrested in Portsmouth, England after punching a police horse during a riot following a soccer game. He apparently was angry that Portsmouth lost to Southampton. It isn't clear why he blamed the horse though. From The Telegraph:
In the footage of the aftermath of the first match in seven years between bitter rivals Southampton and Portsmouth, the supporter then attempts to run from the horse, but his path is blocked as he ends up in the arms of a group of police officers with riot shields.
Hampshire Constabulary said a 52-year-old man was arrested on suspicion of animal cruelty and attempted criminal damage. He was later released but remains under investigation.