Secterianism can be found everywhere remember that Jesus could easily be described as such where a man manufactures weapons in order to violently evicte the money changers from the temple because it broke with his domga.

Secterianism is often found where old dogma is threatned but it also describes very well most revolutions and peoples uprising.

Even the quote from Jefferson is dogma.

We hold these truths to be self-evident: that all men are created equal; that they are endowed by their Creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness.