There is currently much discussion on what the Ukrainian government, the opposition, the EU, the USA, Putin etc. should do in order that the country's crisis situation can be tempered.
One thing is almost certain. As journalist Mustafa Nayem, the man who started #euromaidan, puts it:
"..I think that if what is happening in the streets fails, a dreadful scenario awaits us. I think the purges that will pass through civil society activists, among students, among teachers, and politicians, will be worst Ukraine has ever seen. Because they will not stop.
For them it [this failure] would be a sign of the weakness of civil society and the opposition. And they will be afraid of what happened in 2004, and will do everything in their power to avoid this. Moreover, they will say, look, you are weak, you wanted to do illegal deeds."
Luckily the evidence suggests many, many Ukrainians [and also leading European politicians] feel the same way as Nayem..
p.s. This contribution in Ukraineanalysis describes the dangers of potential failure of the current Maidan..