I dunno.
Religion CAN be harmless, but more often than not, it is used as a justification to enshrine an "US vs THEM!" mindset-- such as "HEATHEN SINNERS vs Godly Followers!", et al.
Nationalism is basically the same thing, just minus the supernatural aspects, and closer to earth in its motivations for "US vs THEM!" as a motive.
Racism is still the same thing, just taken to a genetic/etymological standpoint-- Still basically "US vs THEM!", just in a more absurd wrapper.
And finally, you have tradition-- which at least is less about "US vs THEM!" and more "the way things have always been!", which more often than not, is used as justification for sustaining afore mentioned "US vs THEM!" ideological powerhouses.
Given that the behavioral patterns of "US vs THEM!" causes so much waste, causes so much suffering, is not good for either the incrowd OR the outcrowd, and exists almost exclusively so that people can be dicks to each other and feel comfortable doing it, I fail to see why they should be respected in a strong manner.
Again, religion CAN be practiced without that behavioral bent, but it seems to be human nature to want to segregate at a certain level, and then to abuse religion in such a fashion. I give exception to religious practice that does not devolve in that direction, since it causes no true harm, but once it does-- NOPE, no respect for it, since it is no longer about respecting a divine order, and all about enshrining "My god said I could abuse other people I don't like" which is not something that can fly in the modern world.