especially anders behring breivik, who killed 77 in a gun and bomb attack in norway eight years ago. last month the fbi arrested a coast guard officer in maryland, accusing him of amassing weapons and plotting attacks on members of congress. also inspired by breivik, prosecutors say. security experts say a common thread of white nationalism is fierce opposition to immigration, calling it invasion. in a document the new zealand attacker appears to have posted online, he said he president president trump quote a symbol of renewed white identity, though he was also critical of the president. the president today condemned the attack. >> i think it's a horrible, disgraceful thing and a horrible act. >> do you see today white nationalism as a rising threat around the world? >> i don't really. i think it's a small group of people that have very, very serious problems. >> reporter: ali sufan, a former top fbi counter terror agent who investigated the 9/11 attacks, says right-wing extremism is not