Police had deployed large forces along the major junctions of Hosur Road, where major protests took place on Monday.
In above sentence which I read in new paper past perfect tense has been used. Past perfect tense is used to refer past of past. I am unable to make out two pasts in above sentence.
Does it mean Police were already aware of this protest on Sunday or before protest and already deployed last forces along the major junctions on Sunday or before protest? I mean deployment of forces is first past and taking place of protest is second past.