I think that these photos are from a pick-up point where the illegals wait to be taken into Tuscon...so that they can blend in, they change clothes and throw away their pack packs...there was one group(maybe the Minutemen?) that would police up the back packs and give them out to school kids every September.
I wouldn’t give them to kids, or anyone. They needed to be burned. No amount of soap and water can clean that up.