On the eve of the G20 summit in Hamburg, billboards  with portraits of Ukrainian servicemen, volunteers, doctors and other patriots who resist Russian aggression against Ukraine were placed.
The posters appeared on July 5, on the initiative of the Ukrainian Crisis Media Center.
The project "Look closely at their faces" was founded by Ukrainian Crisis Media Center, the Ukrainian Embassy in the USA and photographer Roman Nikolayev in September 2016.

The co-founder of the Ukrainian Crisis Media Center Gennady Kurochka spoke about the purpose of the project:

“This project has a very important goal - to remind the leaders of the free world that in 1994 Ukraine received security guarantees in accordance with the Budapest Memorandum when it refused it’s nuclear arsenal which was the world's third largest one. And now it courageously confronts Russian aggression and defends the borders of civilization.”

The UCMC further noted that the G20 summit is a good opportunity for world leaders to force Russia to halt and start acting within the legal framework.

Reference: the 12th G20 summit in Hamburg will be held on July 7 and 8, 2017.
Earlier QHA reported, that in particular, at the G20 summit, the situation in Ukraine will be discussed by the President of the country-aggressor Vladimir Putin with the French leader Emmanuel Macron and German Chancellor Angela Merkel. Note that Ukraine does not participate in the summit.