Poverty and violence

I've long thought that a key source of sectarian peace in Northern Ireland was the economic boom in all of Ireland. This resurgence of violence suggests I was right.

How does this matter for America, other than engaging our sympathy (and possibly, negatively, our sympathies)?

The perennial avarice of the wealthy class in this country for a larger and larger share of the pie leads to privation, and that eventually leads to violence, as it always has. It won't matter whether the maldistributed GDP is bigger if the people have empty stomachs.