This is a scincere Christian who has a misunderstanding that the Catholoc collar has the same meaning as the preisthood clothing in scripture. Read article below that explains why the collar is not biblical and the wearing of it is a sin.
Note: before this gentleman left the store, he was given by the Religious Liberty Network (RLN) the study guide Daniel & The Revelation and the Amazing Facts bible study series.
The Roman Catholic Priest Collar And The Uniform of Rome's Sons By Pastor G. Reckart Copyright 2005 All Rights Reserved
Click image to read history of Catholic collar.
The shirt in and of itself is not evil, like the forbidden fruit in the garden of eden was not evil in and of itself. . What the Catholic collar stands for and the confusion about who is God is the problem.