<p>The performances of the legendary Thai boxer Sombat &#39;Buakaw&#39; Banchamek may still be as formidable as ever at the age of 40. But his practice of holding up a portrait of the Thai King after victory persists, three decades after its apparent invention, as Thais increasingly question the legitimacy of the current authoritarian regime and the draconian lèse majesté law.&nbsp;</p>