It's much easier to connect Obama with current shit in US. simply because we live in this time. For history figures you must look around, search for "indirect" information's. All in all History is more 'art' that objective science. Bucket full of lies, deceptions, misconceptions and other shit. For god sake we actually don't know in which year we actually live... better to say in which century we live... are this 21 century or 19 or 18 century?