chase away, steal
攘 centers on forceful removal: chasing away or driving out something unwanted. The 'steal' sense is a less common extension where the removal is illicit, like taking something away.
攘 combines 扌 (hand) with 襄, which likely contributes the sound and carries a sense of removing or pushing away. The exact historical development of 襄 is uncertain, but the phono-semantic structure is clear.
The hand radical 扌 beside 襄 suggests using your hands to push something away. Imagine shooing away a pest or sweeping out clutter.
For ジョウ, picture a security guard named Joe chasing away a thief: Joe -> ジョウ, and his hands are pushing the intruder out.
expulsion of foreigners
loyalty to the emperor and expulsion of the foreigners
revere the Emperor, expel the (Western) barbarians
revere the Emperor, expel the (Western) barbarians
repulse (e.g. enemy); repelling; driving off
principle of excluding foreigners (late Edo period)
fierce fighting