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Israeli mortar shells struck outside a U.N. school where hundreds of Palestinians had sought refuge on Tuesday, killing at least 30 people — many of them children whose parents wailed in grief at a hospital filled with dead and wounded.
Do I need to reiterate already?
Propaganda often presents facts selectively (thus lying by omission) to encourage a particular synthesis, or gives loaded messages in order to produce an emotional rather than rational response to the information presented. The desired result is a change of the cognitive narrative of the subject in the target audience to further a political agenda.