Im on the train to Paris from Barcelona and I was afraid they might try to block the Spanish border today. No problem, Im in France and about half way to Paris now. But I am a little concerned about the arrival, because blocking or attacking trains is a big European protest technique.
Needless to say, I planned my trip well before the riots broke out! However, the train is pretty sparsely populated, even though this is a holiday weekend, so I think a lot of people cancelled.
Stay alert, have good time if possible. Be safe.