That incident was many years ago, and the artist has since apologized for it, also years ago.

From Wikipedia:

Otterness issued an apology which was reported in the Brooklyn Daily Eagle in April 2008, "Thirty years ago when I was 25 years old, I made a film in which I shot a dog. It was an indefensible act that I am deeply sorry for. Many of us have experienced profound emotional turmoil and despair. Few have made the mistake I made. I hope people can find it in their hearts to forgive me -- Tom Otterness." The Brooklyn Daily Eagle article stated: "While it remains to be seen if this will mollify Otterness’ critics, it does appear to be the apology many are asking for." [22]
In September 2011 Otterness was awarded a $750,000 contract for art in the new Central Subway project in San Francisco. The San Francisco Arts Commission claimed to be unaware of "Shot Dog Film" when they awarded the contract.[23] The mayor of San Francisco has called for the contract to be rescinded, calling "Shot Dog Film" "deeply disturbing".
I do believe people can learn from their mistakes, and can change. Just sayin' ...