You don't say where you live or where you get your 'knowledge' from. Is it your opinion that Israel deliberately wants to feed shelter and do dental work for all the Arabs in the area? Is that why they're picked up and held in prison? Can't your brain encompass the fact that there might be arab criminals? The jails in Arab countries are not empty though they do practise the death penalty quite liberally and they empty their jails that way. I suppose it's a thought. But Israel doesn't do things like that.
Austrian police say they expect 10,000 migrants to arrive from Hungary (DPA)
from the article: Israel to release 30 Palestinian prisoners from Gaza on Tuesday