congregate
verb (used without object)
to come together; assemble, especially in large numbers.
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Shortly before he delivered the Rose Garden speech, flash-bang devices and what has been described as tear gas were deployed near protesters who had been congregating near the White House.
From Washington Times ● Jun. 2, 2020