Black Friday has long been, and will most likely remain, the busiest shopping day of the year.

But the features that have made it a cultural phenomenon — the discounted electronics, the predawn openings, the curbside campsites, the incivility — are changing with the broader retail landscape.

Shoppers can now find bargains well before and long after Black Friday, and some deals are explicitly intended to draw spending away from the main event. The retail bonanza is increasingly met with indifference or disapproval by Americans who want to spend time with their families, sleep in and give underpaid retail employees a break. Foot traffic into stores on Black Friday is slipping while e-commerce claims a growing portion of the sales.

Here is a look at Black Friday, past and present.

The Retail Shakeout

No store, no deal: Store closings reshape lines