Is there anything I can do about all of this food going to waste?

I’d assume this goes on in all chain restaurants. I was in one the other night at the time they were closing. I saw them throw away trays and trays of food right into the garbage. It made me furious and sick. There are people living just outside of the restaurant who don’t have enough food to adequately sustain themselves. Can I write to someone? I’ll organize something myself if I have to. That food shouldn’t go to waste. I was talking to one of the employees and she said that they are not even allowed to take the food home.