Getting along with Christians who are different

A debate has arisen in the Christian Unions comments section and elsewhere about Evangelicals and whether they are bad or not.

MadPriest continues his argument here: Don’t mention the war
and here: A Personal Statement<br>From The Maker Of This Product

MadPriest. I understand that you have come across some naughty Evangelicals who do not pay their parish share and who steal young people and teach them unhelpful doctrines. Things to say about this:

• Not all who would describe themselves as Evangelicals do these things. They really do not. There are some really splendid Evangelical Christian people.
• Other big churches do these things, not just Evangelical ones. They really do. There are some really bad Non-Evangelical Churches.

It really does not help your cause to generalise about people of a particular theological persuasion, any more than it helps to generalise about people of a particular gender / race / height / shoe size. People are all different. Churches are all different.