Indeed, Subjective violence is what we know as violence, where a violent act is carried out by an identifiable actor, which disturbs the status quo. This ranges from institutional to personal, from individuals fighting to genocide to atomic annihilation, and this is what attracts the maximum attention. Zizek says, we have a frontal view of subjective violence, and we either condone (as in state sanctioned wars) or condemn (as in violent acts of peace breaking) this violence.
The objective violence, as Zizek points out, is the state of peace itself. This is a difficult concept to accept, but not to see. We indeed live in an apparently 'unfair' world. The unequal consumption is one of the most visible aspects of this unfairness; the inequality of opportunity is its most damning proof. But, the system is still kept in its place, by the acts of 'keeping the peace', the sort of state-sanctioned system of violence and intimidation that goes on. The reason this effort to maintain this status quo will still be counted as violence, and not peace-keeping, is because the system is inherently unfair: This is only based on a few arbitrary and self-serving rules imposed upon all by a few. The rules themselves are repressive, and the fact that these are built into the structure, expected to be taken for granted, makes them omnipresent, more repressive than subjective violence, more degenerative than the aftermaths of an imagined dirty bomb outrage.