Us Vs. Them = Us AND Them??

Contrary to what the title states, I find it highly unlikely that a person battling another person could really become close and merge with their enemy. I feel there is too much tension between them to be resolved most times, especially in extreme cases like that of the Crucible. Those who knew the people hanged were innocent will probably never forgive Reverend Parris for his aiding in the execution of those individuals and no matter how much they try to forgive him, they will always have a deep down resentment for what he did, especially being the spiritual leader of Salem.
The reverse certainly could apply also as it does in real life. Two people who were best friends have a falling out of some sort, and get a new group of friends or whatever and now it turns into a battle to get them back for the feelings they caused by breaking off the friendship, which causes a "Us and Them (Or a Me and her/him) to become a Us vs. Them (Me vs. him/her)." I feel most people are too shallow to surpass the strife in their life to form a bond, though it does happen. I don't feel the people in Salem will ever forget this episode in which they lost family, friends and such because children were claiming they were with the "Devil" without substantial evidence except for children's word, in which they found lied at the end when it was too late.
While many can stitch up the situation where they were against a specific person, for the most part, I feel truly becoming one with those in which you opposed will always be rocky as somewhere deep down, there will be this feeling of potential betrayal, which will keep a true relation from forming. Humans tend to be mistrusting like that. :)