A different type of counter-culture can be rationalized with a POD in the fifties.
The OTL fifites were a time when supply finally caught up with demand for consumer products and housing. Though it might be well into the sixties when most Americans enjoyed these products, they were well visible on the showroom floors. For that reason, late fifties tend to be idealized.
Now, suppose the cold war escalated into a war between the US and USSR in the late fifties. You can look up "Operation Dropshot" to read accounts of how the US actually had a contingency plan for such a war. Without stressing the political details (maybe Stalin lives a few more years; maybe Ike can not run again in 1956), suppose a war does break out and the US comes out ahead. In any scenario, the resources of the country (and all NATO allies) will be stressed. Rent and price controls will be back as they were in WWII. The world will have no standing example of a large, free-market economy, as the sixties will be dominated with the economy of scarcity that characterized 1942-1952 OTL.
Now, a version of the counter-culture in the late sixties was inevitable, for two reasons. The birthrate soared after WWII, creating a demographic split. Then, US schools in the fifties and early sixties did an incomplete job reconciling the Nuremburg trials with the ex post facto law, fostering a generation that questioned the authority of the government.
Move to ATL 1966, some seven years after a major war. The US economy is not one of plentiful goods, but one of government-regulated price and commodity control. The twenty-year olds of the time, with a streak of rebelousness in their blood, will not be protesting a consumer-based militry industrial complex. They will protest an opressive government-controlled economy that stifles productivity.
The hippies would be a fiscallly conservative group, even more in line with the "libertarian" label with which they are credited today. Some of their left-wing interface with the mainstream might remain, dress codes for instance. But the lackluster "drop out, drug out" culture might be replaced with an Amish-style work ethic for individual productivity.
The OTL hippies protested a gluttonous consumer-driven economy run by WWII veterans busy rewarding themselves with homes, cars and appliances. In ATL, the economy is very different and the protesters take a different position.