Which of these was the most significant? Which of them are a glimpse of what is to come? Which will still be remembered, and regarded as important, in a year's time - or in 5 or 10 years' time?
Please note this is an unashamedly parochial selection, compiled from a UK perspective. I'd be interested for any suggestions for a more international list.
1. The 100,000+ demonstration for Gaza on 10 January: one of the most radical, militant and angry marches I've ever been on, and a reminder of the mobilising power of this country's anti-war movement.
2. The wave of student occupations for Gaza, involving action at more than 30 universities, which constituted the most impressive example of student solidarity action for many years.
3. Put People First and G20 protests: 35,000 marched on 28 March, focused on the issues of jobs, justice and climate, with smaller but lively and highly political protests during the following days. Ian Tomlinson was tragically killed by police towards the end of the City protests on 1 April.
4. Strasbourg's anti-NATO demonstrations followed hot on the heels of the G20, facing an extraordinary and repressive operation by French police. Stop the War contingents from the UK were amongst those protesting.
5. Workers went into occupation when Visteon unexpectedly announced mass redundancies. This raised the spectre of workplace occupations in a way not known for many years.
6. The fascist British National Party picked up two seats in the European Parliament from June's elections, including leader Nick Griffin in the North West of England. Anti-fascists campaigned against the BNP threat before the elections, and have continued to campaign since - including the protest at the Red, White and Blue Festival in August and mobilisations against the English Defence League's racist hooligans. The Euro elections also highlighted the depth of disillusionment with mainstream parties after the expenses crisis.
7. Vestas brought together the issue of rising unemployment with the politics of climate change. A group of non-unionised workers occupied their wind turbines plant on the Isle of Wight. Although ultimately unsuccessful, the militant action carried forward the idea that occupations are the way to resist closures and job cuts.
8. Postal workers took national strike action in the autumn. The leadership ended up selling them short with a shoddy compromise deal, but on the plus side it signalled the potential for mass public sector strikes.
9. Stop the War's October 24 march and rally, including a speech by serving soldier Joe Glenton, captured the growing public discontent with the war in Afghanistan, which is becoming especially pronounced amongst relatives of troops and in the working class communities they come from.
10. Copenhagen's UN summit on climate change was greeted by a wave of protest, in the host city and internationally, with a demonstration of 100,000 or more in Copenhagen on 12 December.