Thanks to an explosion of Keynesian deficit spending around the world, an explosion that has predictably correlated with weak economic output, major ink is being spilled about the economic crack-up unfolding before our eyes. To state the obvious, wasteful, capital destroying governments can only spend what they first extract from the private sector.
In the above sense government spending is always and everywhere an economic retardant. That's the case because governments by definition are not disciplined by profit, thus explaining spending that merely consumes capital. Conversely, a private sector that is burdened by profit demands must as much as possible deploy capital with an eye on creating more of it.
Put simply, capital placed in the hands of politicians disappears, while capital placed in the hands of private actors frequently leads to innovations that allow the proverbial impoverished shoemaker to purchase equipment that expands his shoe output. Whether governments are in deficit or surplus mode, their spending nearly always weighs on economic output.