This. The Western Empire went through an eerily similar series of crisis' as the west faces today. Mass immigration, foreigners seizing the highest mantle of government and ruling against the interests of the Empire, a corrupt and bloated ruling elite, suburban and city squalor, huge inflation resulting in the breakdown of industry. Weak military rulers and a slackening of the legions, even ( if you believe in it) climate change with a lot of Romes wine economy becoming infertile with lowering temperatures, Religious tensions and a disregard for tradition, even a transgender Emperor before it was vogue.