Adherence to ideologies is a form of logical fallacy by way of appeal to the majority. First identify yourself with a group or idea by associating with one or two common beliefs, and then subscribe to the entire set of packaged beliefs to which that particularly group subscribes.

It saves a lot of time not having to evaluate each problem independently on its own merits, but packing unrelated beliefs together leads to an inconsistent belief structure that an independent man of reason would never allow