My question is not focused on the doctrinal issue, but on the external practices which were contributing to the division. For example, I know there were many 'image breakers' similar to traditional Jewish views, who even took a swing at Luther for having pictures in his Bible, whereas Luther was a little more middle of the road with regards to images and statues. So long as they were not used in anyway that might suggest invocation to Mary, or the Saints, which turned them into proper idols, he did not see a problem.
The question therefore, is NOT should this thing, or that thing, be offensive, but 'historically', what was offensive?