A highlight of my recent trip to Lisbon was seeing the larger than life bronze sculptures of Mexican artist Rivelino. Titled "Nuestros Silencios", the pieces are powerful and haunting. The message is clear and speaks volumes about freedom of expression. The work is a cry for human rights and equality, but also an abstract treasure!
The sculptures are on display at the foot of Park Eduardo VII - standing guard at one of the busiest intersections in the Portuguese capital. On guard there that is through mid- January. After that, they will continue their European tour to Barcelona, Madrid, Brussels, Rome, & London.
I learned about the exhibit from ARTNEXUS well before I left for Lisbon. The incredible organization that supports artists around the world has an excellent newsletter that is chock full of information on upcoming events and exhibits. I was so excited to see these works. 
Thank you Rivelino, and thank you ARTNEXUS. Click on the link to subscribe.