Yes of course. Bigot is a more appropriate description than "horrible person" though. I can't believe so many of you are saying no. I feel like I'm in the Yahoo comments section.
There was a time when you were ignorant about trans issues, you know.
How long have you known me? Even if that was true (which it isn't) that still doesn't mean that such a person isn't a bigot.
So from the time of your birth, through your youthful ignorance, into adulthood, you have always been aware of what transgenderism is, and fully understood every single aspect of it?
There was a time of course when I didn't know what that word meant, but I was never intolerant towards them once I found out that transgender individuals exist. I'm sorry but I don't understand why someone would immediately be suspicious of someone who is different and feel threatened enough not to support the issues that concern them. That fear and suspicion of what is different is what bigotry is.