What needs to be shouted from the rooftops today is that austerity always fails, always has failed and always will fail. There is no way to bring a nation to prosperity by depriving the mass of its populace of income. It doesn't work and cannot work.
There may be those who actually believe that this is the right course to pursue, but most are no doubt the rich and powerful who demand that such a course be taken because to do so will make them richer and more powerful at the expense of masses. Either way it is a crime to impose austerity on a population. Those who pursue this vile course of action for purely selfish ends are the kind of people for whom the French invented the guillotine. Those who believe in austerity out of willful ignorance should be held responsible for their own willful ignorance.
Advocating austerity is no more acceptable than denying climate science. Imposing austerity on a population should be an international crime against humanity, punishable by imprisoning the politicians who spearheaded austerity measures into law, the administrators who implemented those laws and the private businessmen who influenced governments to take such measures knowing that they would profit from the misery of the masses. Just as genocide or wars of aggression or imperial designs are outlawed internationally, just as torture is outlawed, so should austerity measures be condemned in the hopes that it soon shall be swept into the dust bin of history.