WTF!!!! It makes me angry just to hear that!!!
I would have grabbed the kids leg and dragged him to him mom and kicked mom and then kicked the boy. Then tell them know you know how it feels. Make them see that its not cool to kick and animal or anything else. What is going on with todays kids.
For someone like me that cant have kids my yorkies are my kids so that would be like someone kicking my kid.
I am sorry that happened to you!!