Why is it important to think critically about the media you look at each day?

As soon as hitler took over, he began persecuting jews. what does persecuting mean in this context

Imagine if going to work every day meant your life thats the reality that meat packers in this county face with some of the highest rates of injury and death of any profession i myself worked at such a facility for two years and can resport on the unsafe conditions firsthand

This excerpt is from the poet by alfred lord tennyson the poem describes a poets consciousness and perception which three lines suggests the richness of a poets thoughts