The Carney article from the Washington Examiner article you quoted, clearly states "sometimes before, sometimes after, a verbal demand to move." This suggests the crowd was ignoring "verbal demands to move," which is advance notice. The DC curfew states "Officials said during the hours of the curfew, no person shall walk, bike, run, loiter, stand, or motor by car or other mode of transport upon any street, alley, park, or other public place within the District." As the Park Police began their movement forward at 6:35 pm by CNN's video times stamp, the protesters only had about 25 minutes to get home and off the street. The evidence suggests that they were allowed to protest all day long and that the push back only started a short time before the curfew, when the protesters had a legal obligation to be headed home anyway.
Non-sequitur. The fact remains that the protesters had no advance warning.
The Carney article from the Washington Examiner article you quoted, clearly states "sometimes before, sometimes after, a verbal demand to move." This suggests the crowd was ignoring "verbal demands to move," which is advance notice. The DC curfew states "Officials said during the hours of the curfew, no person shall walk, bike, run, loiter, stand, or motor by car or other mode of transport upon any street, alley, park, or other public place within the District." As the Park Police began their movement forward at 6:35 pm by CNN's video times stamp, the protesters only had about 25 minutes to get home and off the street. The evidence suggests that they were allowed to protest all day long and that the push back only started a short time before the curfew, when the protesters had a legal obligation to be headed home anyway.