Altria just raised its dividend by 4.1%.Although the stock market has generally held up during the past couple of years, both the S&P 500 and Nasdaq Composite experienced some hefty selling during the past month. While sell-offs are par for the course in the market, they can be quite jarring for inexperienced investors.One company that has been a consistent winner for decades is tobacco company Altria (MO 0.26%). Altria is considered to be a sin stock due to the products it sells -- primarily cigarettes.Alt ...