That's a cracked causal conditional; a broken causal nexus
In other words, the bold above is correct (the if)
but the then you have insinuated falsely is in fact not correct at all, italicized above
I believe the causality is there. Radicalism, political, social or religious, tends to arise in certain economic conditions. When people have economic freedom to start a business, when jobs are plentiful, when taxes are low its hard to recruit them into radicalized groups. Humans, for the most part, want a life of leisure and certainty which a growing middle class existence provides. Central banks create a debt based money system that continues to debase the purchasing power of the people. This is a natural occurrence because you have to borrow the fiat money and then borrow the money to pay back the interest. You have to pay interest on the money you borrowed to pay the interest...and so on. It is inevitable that the money supply increases exponentially. More money in circulation equals more money chasing the same amount goods. Hence, prices go up. this is the inflation. This inflation decreases the purchasing power of money people have worked their asses off to save.
Those folks who live at the bottom of the economic ladder feel this loss of purchasing power the greatest. Suddenly, basic items for survival become too expensive to acquire. Panic sets in and humans (domesticated primates) start looking for simple answers and solutions. Because the tenets of the modern banking system are difficult to understand (on purpose) most humans don't try. Instead, they fall back on emotionally easier targets. Humans are genetically programmed to be cautious of dissimilar things. Instead of trying to fathom the complexities of Credit Swap derivatives its easier to look at someone who dresses differently, has a different language, wears a different religious symbol or has different colored skin. There is an emotional satisfaction to being able to yell racial epithets. There's an emotional satisfaction to using violence against other "groups".
There are, of course, crazy people in all circles of human institutions but their power is normally suppressed when the majority of people are working, their families are safe and they see a brighter future. Remove those pillars of civilization and humans become ripe for radicalization. That's what you have going on. Huge inflation, middle class disintegration, and uncertainty.