Yep, I was embarrassed by that and by the "is this a library" chant when people were only quiet because they were concerned for Ellie as her situation looked very bad. I apologise on behalf of Chelsea fans everywhere. In the main, the culprits are young and steeped in the idea that such behaviour counts as getting behind your team. We are trying to educate them I promise you.
For completeness, I will tell everyone who does not already know that the vast majority of Chelsea fans, myself included, were as concerned as everyone else when Ellie was in trouble, and that we were on our feet applauding and cheering for her as she was carried off.