Civil rights groups have called David Bores's talk "hateful" and "potentially unconstitutional."
The Supreme Court just green-lit the president's Islamophobia.
The event has been arranged by Dutch anti-Islam leader Geert Wilders and Flemish nationalist Filip Dewinter.
The far-right Dutch politician said Europe was "imploding" due to weak leaders and open borders.
Christian Piquemal was one of dozens arrested across Europe during demonstrations in support of PEGIDA.
It is pathetic we have to pause a critical national-security debate to consider Trump's ridiculous proposal.
Hateful rhetoric and discriminatory policies threaten the safety of Muslims in the United States.
The Turkish president warned that "racism is merging with anti-Islamism," posing a threat, especially to Europe.
The Australian Liberty Alliance is based on Wilders' popular Party for Freedom.
Group called Global Rally for Humanity believes Muslims pose a threat to the U.S.
Wilders offered to take Merkel back to the Netherlands with him, provoking chants of "Merkel must go!" from the audience at a demonstration by German anti-Islam movement PEGIDA.
Hating minority groups like Muslims is alien to America's culture of tolerance.
Anti-Islam group Pegida has been holding weekly rallies since October.
Merkel's words come hours before marches by anti-Islam group PEGIDA were due to start in several German cities.
One Jewish protection group with 3,000 volunteers say they are increasing community training.
The PM attended the mass rally in Paris to pay tribute to those killed in the attacks by Islamic extremists
Tommy Robinson endorsed German anti-Islam marches and said former EDL members have joined them
Foley's family protested the use of his image in ads by the American Freedom Defense Initiative