Those evil zombie window tiles...
Good thing Rick and the gang were around to protect Negan from all those evil zombified window glass tiles in the building. That'll show them.
They also gave rampaging Rick a little submachine gun (9mm) while Gabriel literally had an AR-15 (5.56mm) which would have probably killed Negan for good when he was hiding in that small armored shell. I clearly saw holes being shot through the cover but for the love of god Rick's aim is worse than a stormtrooper.
I hope Gabe has some Vaseline handy cause his ass is going to need some good lubing from Negan. 'Thank God'