Watch this short video:
http://www.independent.co.uk/news/wo...-a8240341.html
(Following this link to a British media site will not result in you being targeted by the originators for more such messages.)
While it avoids being explicit enough to get production participants immediately arrested, the video clearly threatens violence against media which the NRA chooses to target with slanderous insults, including named and prominent personalities.
In other words, the supposedly-patriotic NRA is now threatening American citizens whose free speech the NRA does not like.
I think the only possible conclusion is that the NRA does intend to incite violence, just as similarly strident propaganda was used to incite violence in, for example, Rwanda. Accordingly, the NRA should now be regarded as a terrorist organization.