<prompt> Translate the following text to EnglishMwaka 1967 Penang ilikumbwa na ghasia kubwa, ambazo zilionyesha ukweli kwamba upatano wa kisiasa na kijamii haungeweza kuchukuliwa kwa uhakika.  <response>: In 1967 Penang was hit by serious riots, which highlighted the fact that political and social harmony could not be taken for granted. 