As to the discussion at hand, from what I recall of opinion polls made in Europe, religious people are more tolerant than non-religious people (except for when it comes to homosexuals, for obvious reasons).
You probably should back that up. I think some EU surveys can be found on Eurostat(?)/European Social Survey. In any event there is the government sponsored British Social Attitudes Survey running from 1980 and the Scottish Social Attitudes Survey (who seem to make their results more public) The SSAS reports every 4 years on Attitudes to Discrimination with surveys in 2002, 2006 and 2010. The 2010 data has still to be released.
http://www.scotland.gov.uk/Resource/Doc/205755/0054714.pdfIn order to define 'religious' and 'non religious' it split the data into those 'Who attended religious services at least once a week' (229 from the sample) and Those who attended 'practically never/no religion' (955 of the sample)
On a sample question; 'Would be “unhappy”/ “very unhappy” if lose relativemarried/long-termr’ship with…'
The response to each of the options was as follows - 'Religious' v 'Non Religious'
Someone who had a sex change operation 58-46
Asylum seeker 33-38
Gypsy Traveller 41-34
Same sex 52-27
Muslim 29-23
Hindu 26-17
Learning Disability 21-14
Black/Asian 13-19
Chinese 12-9
Jewish 11-10
With the exception of 'asylum seeker' and 'black/asian' those who are religious score lower on the SSAS 'attitudes to discrimination' than those who are 'non religious'. The differences on most (with exception of same sex) are not vast; but they are there. There's alot of other information in the sub sets.
EDIT
Just for comparison the 2002 survey report used the figures in a different way and gave a breakdown by religion (as people who vonsider themselves religious may not attend any services)
Male same-sex relationships 'always wrong'Church of Scotland/Presbyterian 39%, Roman Catholic 29%, No Religion 20%
Would 'mind inter-racial marriage'Church of Scotland/Presbyterian 23%, Roman Catholic 15%, No Religion 12%
Ethnic minorities 'take jobs'Church of Scotland/Presbyterian 23%, Roman Catholic 14%, No Religion 10%
A mans job is to earn money, a woman's is to be at homeChurch of Scotland/Presbyterian 15%, Roman Catholic 14%, No Religion 8%
Scotland should 'do all it can to eliminate predjudice'Church of Scotland/Presbyterian 64%, Roman Catholic 71%, No Religion 72%