It is the Polish government that has shared the video which also shows that the migrants are throwing objects at the security guards on the Polish side.
Thousands of migrants and refugees are stranded behind barbed wire fences on the border with Poland. Belarussian President Alexander Lukashenko has been accused of sending migrants there in response to EU sanctions against the country.
The Polish Ministry of Defense confirmed on Twitter this morning that Polish forces in the eastern village of Kuznica also fired tear gas at stone-throwing migrants.
– The migrants attacked our soldiers with stones and tried to destroy the border fence to get to Poland. We use tear gas to curb aggression, the Polish defense writes on Twitter.