Remove spans with empty font-family attribute
I see this in the fourth chapter:
<p>Reich had been one of Freud's leading
disciples during the early years of psychoanalysis; unlike
Freud, however, Reich was a <span style=
"font-family:">socialist</span> who <span style=
"font-family:">thought</span> it <span style=
"font-family:">imperative</span> to combine <span style=
"font-family:">politicalactivism</span> and sexual theory.
Sexual repression, Reich argued, was the cornerstone of
totalitarianism, so in order to liberate people <span style=
"font-family:">politically</span> it was necessary to
<span style="font-family:">liberate themsexually</span>
first<span style="font-family:">.</span><a class=
"endnoteReference" href="#en21">21</a></p>
<span style="font-family:">
is obviously redundant and show be removed.