They break in pieces
daka' (daw-kaw')
to crumble; transitively, to bruise -- beat to pieces, break (in pieces), bruise, contrite, crush, destroy, humble, oppress, smite.
thy people
`am (am)
a people (as a congregated unit); specifically, a tribe (as those of Israel); hence (collectively) troops or attendants; figuratively, a flock -- folk, men, nation, people.
O LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
and afflict
`anah (aw-naw')
to depress literally or figuratively, transitive or intransitive (in various applications, as follows)
thine heritage
nachalah (nakh-al-aw')
something inherited, i.e. (abstractly) occupancy, or (concretely) an heirloom; generally an estate, patrimony or portion -- heritage, to inherit, inheritance, possession.