Greta Thunberg was detained by Dutch police April 6 in connection to a protest staged by the climate activist group Extinction Rebellion. Thunberg was among several other protesters who were detained for civil disobedience at the protest, during which protesters blocked a road leading to The Hague, Netherlands.

The group gathered in protest of Dutch subsidies for oil companies, which would allegedly encourage activity harmful to the environment by reducing the cost associated with extracting oil. The group’s gathering was little surprise—not only did Extinction Rebellion advertise their protest on social media beforehand, they had blocked the nearby highway into The Hague more than 30 times before. The goal of the most recent protest was also to block the same highway. However, protestors were unable to access the highway due to police presence, and decided to block the nearby road instead.

In order to protest in most areas of Europe, the process is quite a bit different than here in the United States. Before protesting, one must register their protest with the local government, which will typically offer a few locations where the protest could be allowed to take place, such as a town square or other public location. This is designed to allow the governing authority to ensure the safety of protestors and the general public with an increased police presence and proper road closures.

However, Extinction Rebellion failed to register their protest with the local governing authorities, resulting in the detainment of several protestors. Pundits theorize that this is likely due to the group wanting the protest to have a larger impact (a major highway closure) than it could if it was relegated to a town square or other location. Thunberg and the other protestors will likely be released without charge if the results of previous protests are to be expected.