Paragraph with a colored circle

Question

I would like to put a red circle before the beginning of a paragraph.

This code does that effect but there are a lot of errors:

\paragraph{{\tikz{\draw[red,fill=red] (0,0) circle (.5ex);}} PARAGRAPH}

What I have to do in order to avoid errors?

Answer 1

Just like marmots, sometimes TikZ needs a bit of protection. ;-)

\documentclass{article}
\usepackage{tikz}
\begin{document}
\paragraph{\protect\tikz{\fill[red] (0,0) circle (.5ex);} PARAGRAPH}
\end{document}

Of course, for red bullets you do not need TikZ, you could just load xcolor and do \paragraph{\textcolor{red}{\textbullet} PARAGRAPH} to achieve virtually the same. I am assuming that you want to do more fancy things.