I’m planning to travel to Budapest on Thursday. I think I need to keep an eye on the news in the meantime.
UPDATE: latest news suggests that, whilst there is a large peaceful protest near the government buildings, the violence is quite small scale and can be likened to the "poll tax riots" of the Thatcher years – in other words, mainly confined to one square. I’ve been checking carefully and my hotel is at least two kilometers away from the trouble, so I still intend to travel unless there are significant developments overnight. However, I was planning to take an evening stroll to explore the centre of Budapest, which I may now forego and put off for another occasion.