The WT calls itself Christian while at the same time insisting that its witnesses don't mix with other Christian groups but remain separate.
To be no part of the world.
I was mulling this over recently in my personal Bible reading. In the first century that demarcation would have made sense because apart from your fellow worshippers the rest of mankind were going to be Jewish, Roman, polytheistic, pagan, or (I guess much like today) didn't really care.
Christians had no worries about meeting up with other people who believed in Jesus the same as they did even if there were minor differences depending on who had first taught the gospel message to them.
But nowadays there's not just one Christian group against the world, there's lots of "Christians" out there. So logically why would separation need to continue with no contact?
Now I know what the average JW would probably say, while most of us here eventually recognised that it was simply a cult building an imaginary wall around it's devotees to stop them getting out and listening to other people.
As Jesus said "where two or three are gathered together in my name" the emphasis is on being Christians all together as he intended and letting Christ be present in our midst.