For you it is not because you are not from the same faith. But for a whole community it was. So if you talk about others you should not use words which can offend them..

Did not you had any better picture?

Will posting another picture which offends the people you are talking, reduce the weight of your talk?

I don't think so.. we always have better choice to make if we want to live in peace and social harmony but sadly we skip it knowingly and sometimes as fun and sometimes without knowledge.