The United Nations secretary general, Ban Ki-moon, responded with outrage to news footage of the clash. “I was shocked to see how these refugees and migrants were treated,” he said. “It’s not acceptable.”
Hungary’s foreign minister, Peter Szijjarto, blamed the clash on unruly migrants, who he said had thrown water bottles and set clothing on fire.
Migrants Clash With Police in Hungary, as Others Enter Croatia
Hungary DOES have the right who to let or NOT to let in, otherwise it's called an Act of War if the invaders don't back off.