SNP has sought legal advice on how to get more people from ethnic minorities elected to Holyrood.It comes amid criticism that only four MSPs in the history of the Scottish Parliament have been from black and minority ethnic backgrounds.At their last conference, SNP delegates agreed a motion recognising the progress made in increasing the number of women elected.However, it warned that BAME, disabled people and other minority communities continue to be under-represented at Holyrood.The motion