By Susie Beever An elderly man was attacked by a psassing thug who then ended up on the receiving end as passers-by stepped in to give the yob a taste of karma. Police say they are investigating the reported attack in Keighley, West Yorkshire, on Tuesday after footage emerged of the pensioner being kicked and pushed. CCTV which caught the moment, timestamped to Tuesday morning, shows the backpack-strapped man brush past the older couple on a street in the town, prompting the couple to turn their heads towards him. He then calmly walks back to the older man, kicking and pushing him against a wa…