I need advice how to handle my neighbor who kicks my cat and thinks it's something to laugh about
Ok so, I have a cat who's 5 months old. And a neighbor who has about a dozen of pigeons. And because a year ago or so a cat killed one of their pigeons now they all hit all the cats they see walking around the neighborhood. And my cat doesn't like to stay at home he always roams around but loves to follow me around... so tonight what happened is that their younger boy kicked my cat in the stomach when I was standing just by him... and he did it while smiling and showing his friends like it was a very good prank and when I confronted him he said the same thing that a cat once killed our pigeons. And when I told his mother who's about double my age started to get into a shouting match... crying the same thing. And it ended with them saying "i'll do it again and whatever my son did it was correct." So I need some advice as to how I should handle it. Please give me some advice ASAP. And it would be better if they create little inconveniences to them.