You either need a hearing test, or you are just having another troll. Not even the PC house journal itself mentioned any such grunting. I am sure they would not have passed up the opportunity to mention it, if it had happened. No wonder you have been so reluctant to publish the link, it clearly is just a figment of your imagination.
2017 many people record these events on phones, there is more than one video and not just edited 30 second clip, however, there is only one that is 10.57 and 5.33 minutes in you can see for yourself
The video and chanting is there im more than comfortable with that fact and im not really here to change your view or argue about the fact, more that my opinion is different to yours. This really is not a very good example of political correctness gone mad for obvious reasons.
Then post a link to it as you obviously know which one it is. If you have a modicum of PC skills you can even post it up set at 5:30 ready to view. Then Jezza will have to concede. By continually refusing to post a link you are playing into his hands.
Just to move from one argument to the next, but it will at least end this one (I don't have a modicum of PC skills, just move the slider is far easier for me)