Russia is socialist now?
North Korea and China started with violent wars, so does that fit the pattern of your claim at all? Literally the only example that "fits" is Venezuela, but one example isn't a trend, it's just random. Especially when similar situations exist all over the world with non-socialist leaders from Erdogan to Kagame to al-Sisi.
I was thinking of explicitly right-wing, anti-communist leaders such as Bolsonaro, Orban, Erdogan, Modi, and of course Trump, who are all working in various ways to consolidate power and subvert their owns nations' democratic mandates.