The phrase "demonstration allowed" is correct and usable in written English.
It can be used in contexts where permission is granted for a demonstration to take place, such as in event guidelines or rules.
Example: "Please note that for this event, a demonstration allowed section will be set up for participants to showcase their projects."
Alternatives: "demonstration permitted" or "demonstration authorized."
Mr. Kerik, who had maintained a relatively hard line immediately following the demonstration, allowed yesterday that emotions were running high.
Saturday's rally, part of a weekend of protests and counter-protests, will be the first demonstration allowed to surround the White House in more than a decade.
HuffPost's proximity to the demonstration allowed us to capture photos and video of the event.
"This demonstration allowed us to show a positive image of Calais," said Agius, who said that business in the port city was hurting because of the ongoing migrant crisis.
While accepting the principle that only a valid demonstration allows interpreting the Qur'an symbolically, Averroes maintained that Aristotle had already demonstrated the pre-eternity of the world, which would elevate it, according to al-Ghazâlî's rules, to a philosophical as well as religious doctrine.
This demonstration allows further development in the implementation of the hybrid CNT/IGZO circuit scheme for flexible electronics.
The demonstration allows users to choose various details of the case, with the output showing the most likely finding as to whether a contract exists and the terms of that contract, together with the arguments that can be advanced in support of that finding.
Best: The hands-on demonstration allows prospective students to see how web classes are conducted.
A rigorous objective analysis aiming at demonstration allows us to single out the relevant cause-effect relationships concerning the means so as to better guide our actions.
The government, which usually suppresses street demonstrations, allowed Muslim protesters to gather.
And demonstrations, allowed again after a ban of ten months, are puny affairs compared with their European counterparts.
