Nicola Sturgeon has avoided triumphalism in the wake of the General Election result but it must be clear that she is the leader of the SNP in Westminster as well as Scotland - and she must ensure that David Cameron listens to Scottish voters http://www.heraldscotland.com/comment/columnists/in-the-face-of-anti-scottish-sentiment-stirred-by-the-right-wing-press-and-the-to.125590123