People on two sides of an argument often believe that their opinion is the only right one and that anything that differs is wrong. They expect unreasonably that the people in the middle pick a side or be condemned as being on the side of the enemy.
The truth is that generally in disagreements there are always grey areas.
The people in the middle are reluctant to take sides because they can see the right and wrong in both sides and feel it would be wrong to take sides. Which actually makes them the stronger person because they are not giving into pressure. A great write