These are the horns - rather, Those, namely, the horns being distinguished from the “carpenters,” or destroying workmen (“skilful to destroy,” Exo 21:31), intended in the “these” of the question.
no man ... lift up his head - so depressed were they with a heavy weight of evils (Job 10:15).
to fray - to strike terror into them (Eze 30:9).
lifted up ... horn - in the haughtiness of conscious strength (Psa 75:4, Psa 75:5) tyrannizing over Judah (Eze 34:21).