Yes, Catholics are treated differently on FreeRepublic than non-Catholics because we are different. For non-Catholics religion is a matter of personal choice and the denomination one belongs to is but one of many organizations that they can join or quit at any time.
We Catholics are different. Catholic is not what we are, it is who we are. The Church founded by Jesus is an organic being in and of itself and each member is but a part of the whole. Do not expect non-Catholic to understand, appreciate, or respect this regardless of their Christian intentions or professed balance and impartiality. The world hates us because it hated Him. Wear it proudly, but do not hate in return.
Peace be with you.
Thank you for your >EXCELLENT Catholic advice.