English Research Paper

I'm confused on how to make a good topic sentence and a thesis..... I'm writing a paper on animal rights and my thesis is... Because of animal experimentation and early life termination, there have been many injustices recognized by animal activists which need to be noticed..... I don't know how to make it better!!! Someone please help me!!!:cry:

State your argument in as few words as possible. If you put it here, people will comment on it. You have to try to condense the essence of your paper into a single sentence.