Since May 29th, 2012, Cruz has used her official Twitter account 49 times to lend support to Lopez, a man arrested by the United States government in May of 1981 for seditious conspiracy against the United States and conspiracy to transport explosives to destroy government property, among other charges. Later that year, Lopez was sentenced to 55 years in jail for his various crimes.
Moreover, it appears Cruz is more than just a supporter of Rivera’s; she appears to be a personal friend of his. On May 29th, 2016, Cruz posted a tribute to Rivera, and wrote "for a great friend, a great patriot: for you Oscar Lopez Rivera.":
Indeed, Cruz and Lopez appear to be not just friends, but close friends. Several months after President Obama commuted Rivera’s sentence just before he left office, a decision so bizarre even CNN’s Jake Tapper didn’t understand it, Cruz tweeted a selfie of herself with a man who closely resembles Rivera, with the caption reading "Welcome #OscarLopez":
The fellow-traveller at the rear of this group looks kinda' familiar...