When a decent Muslim person is converted to Islamism

How is this accomplished? And what about indecent Muslims?

In the words of the Chad Mitchell Trio, Islamism is the ism dismalest of all, I suppose, and the only thing we need to worry ourselves about.

Unless you count Christianism, Jewishism, capitalism, corporatism, Cliven Bundyism, Zionism, TeaPartyism, Hinduism, Jainism or militarism, colonialism, racism, fuckwitism & etc..