Nelson Gandulla is a vocal Mariela Castro critic
Buddhist teachings can provide foundation for activists
Lawmakers have two years to act on landmark ruling
Lieutenant governor has ‘consistently been a partner’
Raid took place amid LGBT rights crackdown
HRC president remains critical of White House response to arrests
Homosexuality remains punishable by death in country
Security agents passed activist's house during interview
Mariela Castro led march in city of Santa Clara
Nelson Gandulla said authorities summoned him for 'interrogation'