The blood of thousands of martyred Protestants begs to differ. "
This comment is a textbook example of an argument that "proves too much".
http://en.wikipedia.org/wiki/Proving_too_much
For if the atrocious behavior of Catholics to Protest and the atrocious behavior of Protestants to Catholics five hundred years ago proves that we are NOT brothers and sisters in Christ with those who are baptised and who believe in him, then the blood of Joan boacher, George van Paris, Jan Wielmacke, Hendrik Ter Woort, Matthew Hamont, John Lewes, Peter Cole, Francis Kett, Marmaduke Stephenson, William Robinson, Mary Dyer, William Leddra and thousands of other radical protestants executed by other less radical protestants would therefore suggest that Protestants today are not brothers and sisters in Christ with other Protestants today, which would be illogical.
Ed,
you posted “...other radical protestants executed by other less radical protestants would therefore suggest that Protestants today are not brothers and sisters in Christ with other Protestants today....”
A good example of not Protestant Christian enough for other Protestant Christians, is in my own protestant family that was driven out of Basel, Switzerland to seek refuge in the Rhineland-Alsace (on the current French-Germany border) by more radical Calvinists Protestants in the mid-1600s.