Sentence:  The <WSD>kook</WSD> we will always have with us, to paraphrase Jesus, but the <WSD>kooks</WSD> of yore had to work to maintain their kookery and locate fellow <WSD>kooks</WSD>. They had to pick up their kook phone, subscribe to the kook newsletter, drive to the kook convention. Nowadays, all the <WSD>kook</WSD> has to do is log in to Facebook, where his feed will be enlivened by the chatter of fellow — and likely more extreme — <WSD>kooks</WSD>, toward which Facebook's algorithms helpfully steer him. 
Meaning of the word marked with <WSD> tags:  An eccentric, strange or crazy person.