Unfortunately religions by definition (at least those requiring belief in a single god) are intolerant (of other religions). There is no way around that whatsoever.
"An end to religious irrationality" may be a better concept to promote, though I think leaving mention of religion out altogether may be the sensible option!
In this day and age there is no rational or logical reason to be religious, in the sense of worshipping a god who a) had any involvement in the creation of the earth (or anything) or b) requires followers of other religions to be killed/converted/pitied/despised/insert as appropriate.
Spiritual beliefs are another matter, but you can't end religious intolerance without ending religion, and that goal, desirable as it may be, would seem to be overstretching yourselves a touch!
