Is Watchtower extremist? Yes, of course. Here's why ...
1. if the state doesn't have mandatory supporting, JWs won't report child abuse or help with police investigations
2.
if a JW, or child born to JW parents, needs a blood transfusion to save
life, the JW or child will be denied this then end up dying.
3. seven men in upstate NY exercise near total control of what 7 million people can do, say and even think.
4. shunning happens and is encouraged by the GB - it's a requirement.
5. often, JWs are influenced to write the WT into their will.
6. public 'witnessing' (door-to-door, carts) is mandatory, not left up to individual choice.
7. children are coerced not to make friends with "worldly" students.
8. JW's are required to use their own Bible, which they altered to fit their agenda. -- This is perhaps the single most damning piece of evidence, after forbidding life saving blood transfusions, that prove the JW's are EXTREMIST, IMHO.
9. No outside literature is allowed to verify anything, unless the 7 dwarfs in NY say so or quote from it.
10. Anyone who has been a JW for some time knows that they make it very clear and has been mentioned in public talks through the outlines (maybe WiFi bandit has a copy) that the JW's are not just a religion but a WAY OF LIFE, one that MUST abide with their rules and even if you are born into it you have no choice but to obey, OBEY and OBEY.
This is in addition to LUHE's excellent list I made real fast before I get to work. Until later! ;)