The problem of the European Union has never been a lack of monetary and fiscal stimulus, but rather an excess of these. This has failed to produce real growth, and now we're getting more of the same, but even bigger.
The new Keynesian recommendation for monetary policy is to “stabilize the growth of aggregate demand.” In plain language this means that the monetary authorities should never stop flooding the economy with paper money.
The Left believes that we need the state to force people to act in line with "social justice." This means that somebody must force compliance with state edicts, even if those people aren't called "police."
Economists are often accused of being insensitive or unconcerned about social problems, because we try to consider all the costs and benefits, both short term and long term. This often means that we are skeptical of the popular quick political fix.