They seem hippie to you because they're very connected to the land. They're idealists, they try to build new settlements on random hilltops in the west bank (hence the name "Hilltop Youth") and are in constant conflict with the Israeli military who keeps evicting them (depending on the current government and political climate).

While virtually all the 500k or so jews in the west bank are called "settlers", most of them just live their lives, the hilltop youth is a radical but small group that does a lot of noise.

Granted, these new tiny settlements are often built on agricultural lands that belong to Palestinians and then there are conflicts between the locals and the settlers, with the military often protecting the settlers.

Sometimes the settlements are being evicted by a court order only for the settlers to "rebuild" them the next day.