First of we need to note that at the point in time the two witness arrive, there are no Christians left. The witness are preaching to the Israelites. A group of Israelites have already accepted Jesus and were sealed on their foreheads (144000 people). The witness are preaching to the rest of the Israelites as their last opportunity to accept the way of Salvation.
So my answer would be that, we will not be there to make corrections to our beliefs and theologies.
First, believers would not be be around, at that time.
If the question is "would the believes get offended with anyone so as to kill them?" Then the answer is no. If they do, then they are not believers. Believers are not supposed to get offended at anyone other than Satan and his angels.
AMEN!