I remember that. I think there were two, one ran onto the pitch and one got caught going over the barrier but didn't get onto the pitch. Both of those were spontaneous after we'd scored if I remember rightly. On Sunday they were just entitled wankers strolling onto the pitch while the game was still in progress taking pics and selfies. I've been going to games for 50+ years and never seen behaviour like that before.
And the guy taking the corner flag.
People are jumping on those focusing on them in some weird 'oh live a little' defence, but they could well have resulted in the game being abandoned, a more terse referee would have done it too. Or the players being so focused on getting them off the pitch that we concede a daft goal, to make the last few minutes unnecessarily bitter.
They need banned, it is as simple as that. The club need to be consistent, firm, and clear with this, otherwise more people will take the piss. I felt for the posters at the villa game, but if that is the stance, the club need to stick with it.
The pitch invasion After the final whistle, no issues with that, celebrate to your heart's delight (without mounting the players for a forced selfie).