[lemura]

Because the docents most likely won't engage in physical violence. OTOH, try challenging the following religious dogmas at the respective 'houses of worhship':

Mosque - why don't you believe that Jesus is Lord?
Church - why don't you believe Mohammed is the Prophet?
Synagogue - why don't you believe that Jesus is Lord and/or that Mohammed is the Prophet?

[sheltonmac]

Because the docents most likely won't engage in physical violence. OTOH, try challenging the following religious dogmas at the respective 'houses of worhship' ...

No, but docents work in institutions that are publicly funded. One could argue that since their very jobs depend on funds confiscated through the force of government, they are just as bad. What do you think would happen if someone didn't pay their taxes because they disagreed with the beliefs espoused by the museums they are forced to fund?