My theory on all this recent Xenophobia

[Crunchy]

Or perhaps it's a conscious effort to keep terrorists out of our country by people who don't want to see loved ones blown up, or run over, or stabbed, or shot.

The key here is Xenophobia, not terrorism

In that case you should realize that the most xenophobic nations are Islamic. 
http://www.dailymail.co.uk/news/article-...e-you.html

When you see a crime against Muslims anywhere in the western world just multiply that by 1000 for the crimes against infidels carried out by Muslims in Islamic nations.
From this story:
http://www.huffingtonpost.com/kelly-jame...02644.html

Over the past year, I have written of the intolerance that Christians have shown to Muslims in the U.S. From Missouri to Murphreesboro, Christians have demonstrated both a lack of charity and a denial of the right to religious liberty by setting fire to old mosques and opposing new ones. But Christians in the U.S. are rank amateurs compared to the Muslim persecution of Christians in the Middle East.

In 1990, there were over 1.2 million Christians in Iraq but by the end of 2003, there were fewer than 500,000; in 2013, there are fewer than 200,000 Iraqi Christians.

 Islam is xenophobia personified.