[Alex Murphy]

...please reconsider your use of negative generalizations directed at groups of people who hold creeds different from yours. It smacks of bigotry to do this.

A repeated failure to capitalize the word "Protestant" smacks of bigotry, too.

[ArrogantBustard]

Is "protestant" a proper noun?

Methodist, Baptist, Presbyterian, Anglican, Episcopal, Reformed (in some cases) ... these are all proper nouns. Protestant is not a proper noun, hence it is not capitalized.