From my employer's emergency alert service:
Hungary: Demonstration planned on 19 December in Budapest
19 Dec 16
Teachers plan to hold demonstrations in the capital Budapest on 19 December 2016. An unknown number plans to gather in front of the parliament building in Kossuth Lajos Square at 17:00 local time (16:00 GMT) to demonstrate against proposed government reforms to the education system. This has been an ongoing issue, with past protests drawing large, though peaceful crowds. Localized disruptions in the area are likely.