"Encouraging law-breaking" and "inciting imminent lawless action and likely to incite it" are different standards. The former sweeps up a large swath of stuff,

"Encouraging law-breaking" and "inciting imminent lawless action and likely to incite it" are different standards. The former sweeps up a large swath of stuff, everything from "Smash capitalism!" on down. The latter is much more constrained, and requires both immediacy and a likelihood of results.