Actually you've posted on the wrong forum. "Copyright" or "Legal" would have served you better. But you are setting yourself up for grief if you post images that are trademarked. However you could always ask "permission". Sometimes you'll get the green light for free,as some entities consider it good advertising for them.
“…a photograph which prominently depicts another person’s trademark might very well, wittingly or unwittingly, use its object as a trademark.†— U.S. Sixth Circuit, Rock & Roll Hall of Fame v. Gentile, 1998.“ All trademarks must be removed. This includes logos, brands and entities with copyright or trademarked elements. This many also extend to trademarked products such as cast sculptures, toys, architecture and other elements of design.†— iStockphoto.