Why Almost No Photos or Videos of Hamas?

Media coverage of the fighting between Hamas and Israel has been criticized on many grounds, but one of the most persistent complaints notes the almost total absence of photos and video of Hamas gunmen, rockets, rocket launch sites, and rocket launch crews. At this point more than 3400 rockets and mortars have been fired at Israel, many apparently from sites near the hotels used by the more than 700 foreign journalists who are or were in Gaza. Despite this, journalists have produced only a handful of videos (here and here and here, for example) and essentially no photographs of Hamas fighters and rockets.