Please be aware that historically spamming media representatives has the opposite of the intended effect. A few emails to make it clear that it's coming from a group instead of just one individual can help, but at the point where it becomes saturating inbox noise it tends to get ignored.

It's not like interacting with political representatives or corporate PR/executive types where you're conveying the size of the interested party, in this case newsworthiness doesn't necessarily depend on how many people are sending the email.