Normal behaviour?

During yesterday's excellent Real Madrid-Sevilla match, there was an incident that may warrant further scrutiny. The referee apparently red-carded a Sevilla bench player after he had a row with the linesman. The player is black. At least one fan near the altercation was waving her hand across her face, as if to clear a bad smell. This is the same motion that recently got Milan Baros in trouble, although he denied any racist intent. No one seemed to be passing much remarks on the Madrid version, indicating that we're reading too much into it. Or is it just viewed as par for the course?