A temporary fence of the type used to restrain livestock went up Thursday on the east side of the Kansas Expocentre along areas designated for demonstrators at the weekend rally with President Donald Trump.

Trump is scheduled to speak at 6:30 p.m. Saturday to thousands at a Make America Great Again rally in Landon Arena, which was named for 1936 Republican presidential nominee Alf Landon. Trump’s visit is part of a national tour to promote Republican candidates heading into mid-term elections in November.

Preparations for the event include logistics of handling people intent on protesting or celebrating outside the arena. That included installation of gating parallel to the sidewalk on a two-block stretch of S.W. Topeka Boulevard.

The enclosure caught two people planning to protest Trump’s policies off guard. Both questioned the necessity of a barrier.

“Only a year ago at a right-wing rally, someone was murdered by a car driver,” said the Rev. Sarah Oglesby-Dunegan. “We now have the potential of hundreds of people being trapped between a wall and high-density traffic. Who thought this was a good idea and approved it?”