Sorry for not making my point clearer. Your video which, I totally agree with, makes it pretty clear that grave-worshipping is a major sin.
Our mullahs have made many of our coutrymen believe that their sins can be forgiven in some short-cut way, whether by worshipping graves or by doing umrah. I mentioned umrah because some of our mullahs preach annual umrahs to sweep the slate clean every year; this seems to imply that you can commit any number and type of sins throughput the year and all will be forgiven with an umrah. This seems similar to the Christians belief that Jesus died for their sins and doesn't make sense to me.