Some wilful "naivety" on the part of the English press. Some pointers.
1) if you haven't got a ticket but intend to jib into the ground, carry a forgery. That way, you get through any outer checks and to the actual turnstyle before being turned away.
2) Turn up late in the hope that the rush to get in will lead to laxer security (and see 3 below)
3) Turn up late and en masse so that the pressure on security leads to fears of impending disaster outside the ground and the gates might be thrown open for crowd-safety reasons. There is also zero chance of you being arrested for trying to jib in as part of a mob.
4) when your ticket is rejected you can claim to have paid £1,000 for it thus a) attaining victim status and b) you might be admitted out of sympathy.
The French police may have been heavy-handed and some innocents may have been caught up in it, that's an inevitable consequence of disorderly behaviour, but if anyone thinks that an attempt to reason with feral fans intent on storming the ground would have worked, they are sadly mistaken.