Please help me cut down my ..

I have made it to the finals of the sophomore speech compitition at my school. On tuesday, I have to give my speech in front of the whole sophmore class and the teachers. One problem, it is way too long! It has to be 6:30 and when I read mine it goes over that by more or less a minute. My speech is posted below. Any comments on what I could get rid of would be greatly appreciated, thank you soooo much!

WARNING: it is a bit gory

Welcome to hell. The fiery walls and floors are blazing red. But look again; this isn鈥檛 fire, it鈥檚 blood, the blood of your mother, sister, friends, and soon yours. Your skin is peeled off of your face like the rind of an orange, revealing your broken bones beneath it. Pain, which has been your life-long companion, now consumes you, as it always promised it would. The fire races across your flesh and you welcome it. All that you can hope for is that death will be more forgiving than life. Fiction right? For you yes, but for the animals, or as we like to call them "meat," that you see on your dinner plates, this was their reality. As Linda McCartney once said, 鈥淚f slaughter houses had glass walls, we鈥檇 all be vegetarians.鈥?Well, I am here today to construct for you a glass slaughter house and a factory farm, because not only is factory farming torturing animals, it is also making us sick and it鈥檚 destroying our planet.

According to a U. N. senior official, "Livestock are...the most significant contributors to today's most serious environmental problems." Methane gas produced by farm animals is such a major contributor to global warming, that researchers at the University of Chicago say the average driver in the U.S. would be more effective at reducing climate change by switching to a vegan diet than switching to driving a hybrid. Industrial hog farm manure alone is the biggest polluter of our nation's rivers and waterways.