Buried deep within this pretty entertaining video shot by Peter O'Doherty of Linfield supporters at Tallaght Stadium is some footage of Linfield supporters knocking a guard over who'd waded into the stands. Jump to 2.12. You'll see a guard march into the crowd. There's a lippy bald guy with a black coat. He pushes the guy beside him into the guard - the oldest trick in the book - and the guard goes tumbling down a few rows.