Demand an End to Animal Abuse at Circuses

I had seen a video going viral called "Zena the Tigress Was Dragged by Her Tail During a Seizure While "Performing" in a Circus" 

I cant watch this video without crying! 
I am so angry and so disturbed on how animals are treated in a horrific matter! PLEASE HELP these beautiful animals be animals. I feel as if these animals are being slaved and have NO voice!!!!!