I scold others with a loud speaker in the community, because people upstairs throw garbage at my balcony every day (my house has an open platform), and they scold all day.

Although this is a way, the people upstairs don't buy it. You have offended everyone! Although your behavior does not constitute a crime, your noise has affected everyone's rest, and the method needs to be improved! )

I suggest you find another way to deal with it. Since the people upstairs have no social morality, you can deal with it as they do!

Put away the garbage he left behind, fill a bag (add some of your domestic garbage), then go into his house when he is not looking, and return this bag of garbage to him (all on the ground), but leave the bag with garbage (because it is yours) and say thank you for his things! Come and be rude, and I will pay you back twice in the future! You need to invite some friends as witnesses, but they won't come into the house.

It is estimated that he will not dare to litter in the future!