Hate may be too strong a word.
I see you don't know wtf you're talking about. Read what Murry Rothbard had to say about Reagan. Ronald Reagan: An Autopsy If that is not hatred, I don't know what is.
At one time Ron Paul supported Ronald Reagan. By 1988 things changed drastically. Paul decided to run for POTUS on the Libertarian Party ticket and he ran against the Reagan administration. In fact Paul called Reagan a "dramatic failure"as President. Read the Meet the Press transcript from Dec.23 2007 and GET INFORMED! Link.
My guess is, that picture of Reagan and Paul was from better days before Paul became a total kook!