Hasbara is described as a reference to public-relations efforts to disseminate positive information abroad about the Israelis and their actions.
However, dissemination is scattering or spreading widely, as though sowing seed disseminate ideas.
It is actually a practice to deflect attention away from what supposed to be the issue.
In plain words: those who practice hasbara don't want you to talk about what should or must be issue.
It is an act to dominate and to disseminate their views upon yours..