newly released from the horror of being ogled through the windows, by the heads exposed on Temple Bar with an insensate brutality and ferocity worthy of Abyssinia or Ashantee.
Abyssinia is now modern-day Ethopia and Ashantee is Ghana, two African countries that were viewed during this period of time as "exotic" or "savage" since they were not colonized. Dickens with his eurocentric view is saying those who are looking into the Tellson's are wild or uncivilized to do so. He is attempting again to say his current period of time is cruel, but by comparing it to African countries, feels just a tad bit wrong.