Belief means any religious or philosophical belief; and a reference to belief includes a reference to a lack of belief.
It goes on to describe, in Section 26, harassment which includes the following:
A person (A) harasses another (B) - if A engages in unwanted conduct related to a relevant characteristic, and the conduct has the purpose or effect of violating B’s dignity or creating an intimidating, hostile, degrading, humiliating or offensive environment for B.
This seems quite broad. Would a belief that all female short lists are ethical be considered a belief in terms of this act? Or indeed a belief such as “the sky is not blue”? Or indeed any idea subscribed to.
If I was to argue with a coworker that the sky is not red but blue, and he takes offense, am I breaking the law?